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jQuery UI Instance - Autocomplete

May 08, 2021 jQuery UI

Table of contents

1. jQuery UI Instance - Autocomplete

2. The default feature

3. Contains accents

4. Classification

5. Combobox

6. Customize the data and display it

7. Multiple values

8. Multiple values, remote

9. Remote JSONP data source

10.. The remote data source

11.. Remote cache

12.. Scrollable results

13.. XML data

jQuery UI Instance - Autocomplete

The autocomplete of the jQuery UI is searched and filtered based on user input values, allowing users to quickly find and select from a list of preset values.

To learn more about autocomplete parts, check out the API document Autocomplete Widget.

The default feature

When you enter in the input field, the Autocomplete part provides recommendations. In this example, suggested options for programming languages are provided, and you can enter "ja" to try it out and get Java or JavaScript.

The data source is a simple JavaScript array that is provided to the part using the source option. 

<!doctype html>
<html >
<head>
  <meta charset="utf-8">
  <title>jQuery UI 自动完成（Autocomplete） - 默认功能</title>
  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css" rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <script src="//code.jquery.com/jquery-1.9.1.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css" rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <script>
  $(function() {
    var availableTags = [
      "ActionScript",
      "AppleScript",
      "Asp",
      "BASIC",
      "C",
      "C++",
      "Clojure",
      "COBOL",
      "ColdFusion",
      "Erlang",
      "Fortran",
      "Groovy",
      "Haskell",
      "Java",
      "JavaScript",
      "Lisp",
      "Perl",
      "PHP",
      "Python",
      "Ruby",
      "Scala",
      "Scheme"
    ];
    $( "#tags" ).autocomplete({
      source: availableTags
    });
  });
  </script>
</head>
<body>
 
<div class="ui-widget">
  <label for="tags">标签：</label>
  <input id="tags">
</div>
 
 
</body>
</html>

Contains accents

Autocomplete fields use custom source options to match result items with accented characters, even if the text field does not contain accented characters. However, if you type an accented character in a text field, the result item that is not accented is not displayed.

Try typing "Jo" and you'll see "John" and "Jörn" and then "Jörn" and you'll only see "Jörn." 

<!doctype html>
<html >
<head>
  <meta charset="utf-8">
  <title>jQuery UI 自动完成（Autocomplete） - 包含重音</title>
  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css" rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <script src="//code.jquery.com/jquery-1.9.1.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css" rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <script>
  $(function() {
    var names = [ "Jörn Zaefferer", "Scott González", "John Resig" ];
 
    var accentMap = {
      "á": "a",
      "ö": "o"
    };
    var normalize = function( term ) {
      var ret = "";
      for ( var i = 0; i < term.length; i++ ) {         
        ret += accentMap[ term.charAt(i) ] || term.charAt(i);       
      }       
      return ret;     
    };       

    $( "#developer" ).autocomplete({       
       source: function( request, response ) {         
         var matcher = new RegExp( $.ui.autocomplete.escapeRegex( request.term ), "i" );         
         response( $.grep( names, function( value ) {           
            value = value.label || value.value || value;           
            return matcher.test( value ) || matcher.test( normalize( value ) );         
         }) );       
       }     
    });   
  });   
  </script>
</head>
<body>
 
<div class="ui-widget">
  <form>
  <label for="developer">开发人员：</label>
  <input id="developer">
  </form>
</div>
 
 
</body>
</html>

Classification

Classified search results. Try typing "a" or "n". 

<!doctype html>
<html >
<head>
  <meta charset="utf-8">
  <title>jQuery UI 自动完成（Autocomplete） - 分类</title>
  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css" rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <script src="//code.jquery.com/jquery-1.9.1.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css" rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <style>
  .ui-autocomplete-category {
    font-weight: bold;
    padding: .2em .4em;
    margin: .8em 0 .2em;
    line-height: 1.5;
  }
  </style>
  <script>
  $.widget( "custom.catcomplete", $.ui.autocomplete, {
    _renderMenu: function( ul, items ) {
      var that = this,
        currentCategory = "";
      $.each( items, function( index, item ) {
        if ( item.category != currentCategory ) {
          ul.append( "<li class='ui-autocomplete-category'>" + item.category + "</li>" );
          currentCategory = item.category;
        }
        that._renderItemData( ul, item );
      });
    }
  });
  </script>
  <script>
  $(function() {
    var data = [
      { label: "anders", category: "" },
      { label: "andreas", category: "" },
      { label: "antal", category: "" },
      { label: "annhhx10", category: "Products" },
      { label: "annk K12", category: "Products" },
      { label: "annttop C13", category: "Products" },
      { label: "anders andersson", category: "People" },
      { label: "andreas andersson", category: "People" },
      { label: "andreas johnson", category: "People" }
    ];
 
    $( "#search" ).catcomplete({
      delay: 0,
      source: data
    });
  });
  </script>
</head>
<body>
 
<label for="search">搜索：</label>
<input id="search">
 
 
</body>
</html>

Combobox

A custom part created by Autocomplete and Button. You can type some characters to get the results filtered based on your input, or use buttons to select from the full list.

The input is read from an existing select element and passed to Autocomplete with custom source options.

This is an imperfect part that is not supported. T his is purely to demonstrate autocomplete customization. le. 

<!doctype html>
<html >
<head>
  <meta charset="utf-8">
  <title>jQuery UI 自动完成（Autocomplete） - 组合框（Combobox）</title>
  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css" rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <script src="//code.jquery.com/jquery-1.9.1.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css" rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <style>
  .custom-combobox {
    position: relative;
    display: inline-block;
  }
  .custom-combobox-toggle {
    position: absolute;
    top: 0;
    bottom: 0;
    margin-left: -1px;
    padding: 0;
    /* 支持： IE7 */
    *height: 1.7em;
    *top: 0.1em;
  }
  .custom-combobox-input {
    margin: 0;
    padding: 0.3em;
  }
  </style>
  <script>
  (function( $ ) {
    $.widget( "custom.combobox", {
      _create: function() {
        this.wrapper = $( "<span>" )
          .addClass( "custom-combobox" )
          .insertAfter( this.element );
 
        this.element.hide();
        this._createAutocomplete();
        this._createShowAllButton();
      },
 
      _createAutocomplete: function() {
        var selected = this.element.children( ":selected" ),
          value = selected.val() ? selected.text() : "";
 
        this.input = $( "<input>" )
          .appendTo( this.wrapper )
          .val( value )
          .attr( "title", "" )
          .addClass( "custom-combobox-input ui-widget ui-widget-content ui-state-default ui-corner-left" )
          .autocomplete({
            delay: 0,
            minLength: 0,
            source: $.proxy( this, "_source" )
          })
          .tooltip({
            tooltipClass: "ui-state-highlight"
          });
 
        this._on( this.input, {
          autocompleteselect: function( event, ui ) {
            ui.item.option.selected = true;
            this._trigger( "select", event, {
              item: ui.item.option
            });
          },
 
          autocompletechange: "_removeIfInvalid"
        });
      },
 
      _createShowAllButton: function() {
        var input = this.input,
          wasOpen = false;
 
        $( "<a>" )
          .attr( "tabIndex", -1 )
          .attr( "title", "Show All Items" )
          .tooltip()
          .appendTo( this.wrapper )
          .button({
            icons: {
              primary: "ui-icon-triangle-1-s"
            },
            text: false
          })
          .removeClass( "ui-corner-all" )
          .addClass( "custom-combobox-toggle ui-corner-right" )
          .mousedown(function() {
            wasOpen = input.autocomplete( "widget" ).is( ":visible" );
          })
          .click(function() {
            input.focus();
 
            // 如果已经可见则关闭
            if ( wasOpen ) {
              return;
            }
 
            // 传递空字符串作为搜索的值，显示所有的结果
            input.autocomplete( "search", "" );
          });
      },
 
      _source: function( request, response ) {
        var matcher = new RegExp( $.ui.autocomplete.escapeRegex(request.term), "i" );
        response( this.element.children( "option" ).map(function() {
          var text = $( this ).text();
          if ( this.value && ( !request.term || matcher.test(text) ) )
            return {
              label: text,
              value: text,
              option: this
            };
        }) );
      },
 
      _removeIfInvalid: function( event, ui ) {
 
        // 选择一项，不执行其他动作
        if ( ui.item ) {
          return;
        }
 
        // 搜索一个匹配（不区分大小写）
        var value = this.input.val(),
          valueLowerCase = value.toLowerCase(),
          valid = false;
        this.element.children( "option" ).each(function() {
          if ( $( this ).text().toLowerCase() === valueLowerCase ) {
            this.selected = valid = true;
            return false;
          }
        });
 
        // 找到一个匹配，不执行其他动作
        if ( valid ) {
          return;
        }
 
        // 移除无效的值
        this.input
          .val( "" )
          .attr( "title", value + " didn't match any item" )
          .tooltip( "open" );
        this.element.val( "" );
        this._delay(function() {
          this.input.tooltip( "close" ).attr( "title", "" );
        }, 2500 );
        this.input.data( "ui-autocomplete" ).term = "";
      },
 
      _destroy: function() {
        this.wrapper.remove();
        this.element.show();
      }
    });
  })( jQuery );
 
  $(function() {
    $( "#combobox" ).combobox();
    $( "#toggle" ).click(function() {
      $( "#combobox" ).toggle();
    });
  });
  </script>
</head>
<body>
 
<div class="ui-widget">
  <label>您喜欢的编程语言：</label>
  <select id="combobox">
    <option value="">请选择...</option>
    <option value="ActionScript">ActionScript</option>
    <option value="AppleScript">AppleScript</option>
    <option value="Asp">Asp</option>
    <option value="BASIC">BASIC</option>
    <option value="C">C</option>
    <option value="C++">C++</option>
    <option value="Clojure">Clojure</option>
    <option value="COBOL">COBOL</option>
    <option value="ColdFusion">ColdFusion</option>
    <option value="Erlang">Erlang</option>
    <option value="Fortran">Fortran</option>
    <option value="Groovy">Groovy</option>
    <option value="Haskell">Haskell</option>
    <option value="Java">Java</option>
    <option value="JavaScript">JavaScript</option>
    <option value="Lisp">Lisp</option>
    <option value="Perl">Perl</option>
    <option value="PHP">PHP</option>
    <option value="Python">Python</option>
    <option value="Ruby">Ruby</option>
    <option value="Scala">Scala</option>
    <option value="Scheme">Scheme</option>
  </select>
</div>
<button id="toggle">显示基础的选择框</button>
 
 
</body>
</html>

Customize the data and display it

You can use custom data formats and display data by simply overloading the default focus and selection behavior.

Try typing "j" or press the down arrow button to get a list of items. 

<!doctype html>
<html >
<head>
  <meta charset="utf-8">
  <title>jQuery UI 自动完成（Autocomplete） - 自定义数据并显示</title>
  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css" rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <script src="//code.jquery.com/jquery-1.9.1.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css" rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <style>
  #project-label {
    display: block;
    font-weight: bold;
    margin-bottom: 1em;
  }
  #project-icon {
    float: left;
    height: 32px;
    width: 32px;
  }
  #project-description {
    margin: 0;
    padding: 0;
  }
  </style>
  <script>
  $(function() {
    var projects = [
      {
        value: "jquery",
        label: "jQuery",
        desc: "the write less, do more, JavaScript library",
        icon: "jquery_32x32.png"
      },
      {
        value: "jquery-ui",
        label: "jQuery UI",
        desc: "the official user interface library for jQuery",
        icon: "jqueryui_32x32.png"
      },
      {
        value: "sizzlejs",
        label: "Sizzle JS",
        desc: "a pure-JavaScript CSS selector engine",
        icon: "sizzlejs_32x32.png"
      }
    ];
 
    $( "#project" ).autocomplete({
      minLength: 0,
      source: projects,
      focus: function( event, ui ) {
        $( "#project" ).val( ui.item.label );
        return false;
      },
      select: function( event, ui ) {
        $( "#project" ).val( ui.item.label );
        $( "#project-id" ).val( ui.item.value );
        $( "#project-description" ).html( ui.item.desc );
        $( "#project-icon" ).attr( "src", "images/" + ui.item.icon );
 
        return false;
      }
    })
    .data( "ui-autocomplete" )._renderItem = function( ul, item ) {
      return $( "<li>" )
        .append( "<a>" + item.label + "<br>" + item.desc + "</a>" )
        .appendTo( ul );
    };
  });
  </script>
</head>
<body>
 
<div id="project-label">选择一个项目（请键入 "j"）：</div>
<img id="project-icon" src="images/transparent_1x1.png" class="ui-state-default" alt="">
<input id="project">
<input type="hidden" id="project-id">
<p id="project-description"></p>
 
 
</body>
</html>

Multiple values

Usage: Type some characters, such as "j", and you can see the relevant programming language results. Select a value, and then continue typing characters to add additional values.

This example shows how to use the source option and some events to enter multiple auto-completed values in a single text field. 

<!doctype html>
<html >
<head>
  <meta charset="utf-8">
  <title>jQuery UI 自动完成（Autocomplete） - 多个值</title>
  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css" rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <script src="//code.jquery.com/jquery-1.9.1.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css" rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <script>
  $(function() {
    var availableTags = [
      "ActionScript",
      "AppleScript",
      "Asp",
      "BASIC",
      "C",
      "C++",
      "Clojure",
      "COBOL",
      "ColdFusion",
      "Erlang",
      "Fortran",
      "Groovy",
      "Haskell",
      "Java",
      "JavaScript",
      "Lisp",
      "Perl",
      "PHP",
      "Python",
      "Ruby",
      "Scala",
      "Scheme"
    ];
    function split( val ) {
      return val.split( /,\s*/ );
    }
    function extractLast( term ) {
      return split( term ).pop();
    }
 
    $( "#tags" )
      // 当选择一个条目时不离开文本域
      .bind( "keydown", function( event ) {
        if ( event.keyCode === $.ui.keyCode.TAB &&
            $( this ).data( "ui-autocomplete" ).menu.active ) {
          event.preventDefault();
        }
      })
      .autocomplete({
        minLength: 0,
        source: function( request, response ) {
          // 回到 autocomplete，但是提取最后的条目
          response( $.ui.autocomplete.filter(
            availableTags, extractLast( request.term ) ) );
        },
        focus: function() {
          // 防止在获得焦点时插入值
          return false;
        },
        select: function( event, ui ) {
          var terms = split( this.value );
          // 移除当前输入
          terms.pop();
          // 添加被选项
          terms.push( ui.item.value );
          // 添加占位符，在结尾添加逗号+空格
          terms.push( "" );
          this.value = terms.join( ", " );
          return false;
        }
      });
  });
  </script>
</head>
<body>
 
<div class="ui-widget">
  <label for="tags">编程语言：</label>
  <input id="tags" size="50">
</div>
 
 
</body>
</html>

Multiple values, remote

Usage: Type at least two characters to get the bird's name. Select a value, and then continue typing characters to add additional values.

This example shows how to use the source option and some events to enter multiple auto-completed values in a single text field. 

<!doctype html>
<html >
<head>
  <meta charset="utf-8">
  <title>jQuery UI 自动完成（Autocomplete） - 多个值，远程</title>
  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css" rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <script src="//code.jquery.com/jquery-1.9.1.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css" rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <style>
  .ui-autocomplete-loading {
    background: white url('images/ui-anim_basic_16x16.gif') right center no-repeat;
  }
  </style>
  <script>
  $(function() {
    function split( val ) {
      return val.split( /,\s*/ );
    }
    function extractLast( term ) {
      return split( term ).pop();
    }
 
    $( "#birds" )
      // 当选择一个条目时不离开文本域
      .bind( "keydown", function( event ) {
        if ( event.keyCode === $.ui.keyCode.TAB &&
            $( this ).data( "ui-autocomplete" ).menu.active ) {
          event.preventDefault();
        }
      })
      .autocomplete({
        source: function( request, response ) {
          $.getJSON( "search.php", {
            term: extractLast( request.term )
          }, response );
        },
        search: function() {
          // 自定义最小长度
          var term = extractLast( this.value );
          if ( term.length < 2 ) {             
            return false;           
          }         
        },         
        focus: function() {           
          // 防止在获得焦点时插入值           
          return false;         
        },         
        select: function( event, ui ) {           
          var terms = split( this.value );           
          // 移除当前输入           
          terms.pop();           
          // 添加被选项           
          terms.push( ui.item.value );           
          // 添加占位符，在结尾添加逗号+空格           
          terms.push( "" );           
          this.value = terms.join( ", " );           
          return false;         
        }       
      });   
    });   
    </script>
</head>
<body>
 
<div class="ui-widget">
  <label for="birds">鸟：</label>
  <input id="birds" size="50">
</div>
 
 
</body>
</html>

Remote JSONP data source

When you type characters in a text field, the Autocomplete part gives suggested results. In this example, when you type at least two characters in a text field, the name of the city in question is displayed.

In this example, the data source is geonames.org webservice. A lthough the city name is in the text field after an element is selected, more information is displayed to find the correct entry. The data can also be thrageed and displayed in the result box below. 

<!doctype html>
<html >
<head>
  <meta charset="utf-8">
  <title>jQuery UI 自动完成（Autocomplete） - 远程 JSONP 数据源</title>
  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css" rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <script src="//code.jquery.com/jquery-1.9.1.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css" rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <style>
  .ui-autocomplete-loading {
    background: white url('images/ui-anim_basic_16x16.gif') right center no-repeat;
  }
  #city { width: 25em; }
  </style>
  <script>
  $(function() {
    function log( message ) {
      $( "<div>" ).text( message ).prependTo( "#log" );
      $( "#log" ).scrollTop( 0 );
    }
 
    $( "#city" ).autocomplete({
      source: function( request, response ) {
        $.ajax({
          url: "http://ws.geonames.org/searchJSON",
          dataType: "jsonp",
          data: {
            featureClass: "P",
            style: "full",
            maxRows: 12,
            name_startsWith: request.term
          },
          success: function( data ) {
            response( $.map( data.geonames, function( item ) {
              return {
                label: item.name + (item.adminName1 ? ", " + item.adminName1 : "") + ", " + item.countryName,
                value: item.name
              }
            }));
          }
        });
      },
      minLength: 2,
      select: function( event, ui ) {
        log( ui.item ?
          "Selected: " + ui.item.label :
          "Nothing selected, input was " + this.value);
      },
      open: function() {
        $( this ).removeClass( "ui-corner-all" ).addClass( "ui-corner-top" );
      },
      close: function() {
        $( this ).removeClass( "ui-corner-top" ).addClass( "ui-corner-all" );
      }
    });
  });
  </script>
</head>
<body>
 
<div class="ui-widget">
  <label for="city">您的城市：</label>
  <input id="city">
  Powered by <a href="http://geonames.org" rel="external nofollow" target="_blank"  target="_blank">geonames.org</a>
</div>
 
<div class="ui-widget" style="margin-top:2em; font-family:Arial">
  结果：
  <div id="log" style="height: 200px; width: 300px; overflow: auto;" class="ui-widget-content"></div>
</div>
 
 
</body>
</html>

The remote data source

When you type characters in a text field, the Autocomplete part gives suggested results. In this example, when you type at least two characters in a text field, the name of the bird in question is displayed.

In this example, the data source is a server-side script that returns JSON data, specified by a simple source option. In addition, the minLength option is set to 2 to prevent queries from returning too many results, and the select event is used to display some feedback. 

<!doctype html>
<html >
<head>
  <meta charset="utf-8">
  <title>jQuery UI 自动完成（Autocomplete） - 远程数据源</title>
  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css" rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <script src="//code.jquery.com/jquery-1.9.1.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css" rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <style>
  .ui-autocomplete-loading {
    background: white url('images/ui-anim_basic_16x16.gif') right center no-repeat;
  }
  </style>
  <script>
  $(function() {
    function log( message ) {
      $( "<div>" ).text( message ).prependTo( "#log" );
      $( "#log" ).scrollTop( 0 );
    }
 
    $( "#birds" ).autocomplete({
      source: "search.php",
      minLength: 2,
      select: function( event, ui ) {
        log( ui.item ?
          "Selected: " + ui.item.value + " aka " + ui.item.id :
          "Nothing selected, input was " + this.value );
      }
    });
  });
  </script>
</head>
<body>
 
<div class="ui-widget">
  <label for="birds">鸟：</label>
  <input id="birds">
</div>
 
<div class="ui-widget" style="margin-top:2em; font-family:Arial">
  结果：
  <div id="log" style="height: 200px; width: 300px; overflow: auto;" class="ui-widget-content"></div>
</div>
 
 
</body>
</html>

Remote cache

When you type characters in a text field, the Autocomplete part gives suggested results. In this example, when you type at least two characters in a text field, the name of the bird in question is displayed.

To improve performance, some local caches have been added here, others similar to remote data source instances. Here, the cache holds only one query and can scale to cache multiple values, one value per entry. 

<!doctype html>
<html >
<head>
  <meta charset="utf-8">
  <title>jQuery UI 自动完成（Autocomplete） - 远程缓存</title>
  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css" rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <script src="//code.jquery.com/jquery-1.9.1.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css" rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <style>
  .ui-autocomplete-loading {
    background: white url('images/ui-anim_basic_16x16.gif') right center no-repeat;
  }
  </style>
  <script>
  $(function() {
    var cache = {};
    $( "#birds" ).autocomplete({
      minLength: 2,
      source: function( request, response ) {
        var term = request.term;
        if ( term in cache ) {
          response( cache[ term ] );
          return;
        }
 
        $.getJSON( "search.php", request, function( data, status, xhr ) {
          cache[ term ] = data;
          response( data );
        });
      }
    });
  });
  </script>
</head>
<body>
 
<div class="ui-widget">
  <label for="birds">鸟：</label>
  <input id="birds">
</div>
 
 
</body>
</html>

Scrollable results

When you display a long list of options, you can simply set max-height for the autocomplete menu to prevent it from appearing too long. Try typing "a" or "s" to get the result of a long list that can be scrolled. 

<!doctype html>
<html >
<head>
  <meta charset="utf-8">
  <title>jQuery UI 自动完成（Autocomplete） - 可滚动的结果</title>
  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css" rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <script src="//code.jquery.com/jquery-1.9.1.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css" rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <style>
  .ui-autocomplete {
    max-height: 100px;
    overflow-y: auto;
    /* 防止水平滚动条 */
    overflow-x: hidden;
  }
  /* IE 6 不支持 max-height
   * 我们使用 height 代替，但是这会强制菜单总是显示为那个高度
   */
  * html .ui-autocomplete {
    height: 100px;
  }
  </style>
  <script>
  $(function() {
    var availableTags = [
      "ActionScript",
      "AppleScript",
      "Asp",
      "BASIC",
      "C",
      "C++",
      "Clojure",
      "COBOL",
      "ColdFusion",
      "Erlang",
      "Fortran",
      "Groovy",
      "Haskell",
      "Java",
      "JavaScript",
      "Lisp",
      "Perl",
      "PHP",
      "Python",
      "Ruby",
      "Scala",
      "Scheme"
    ];
    $( "#tags" ).autocomplete({
      source: availableTags
    });
  });
  </script>
</head>
<body>
 
<div class="ui-widget">
  <label for="tags">标签：</label>
  <input id="tags">
</div>
 
 
</body>
</html>

XML data

This example shows how to get some XML data and parse it using jQuery's method, and then provide it to autocomplete as a data source.

This instance can also be used as a reference for parsing remote XML data sources - parsing occurs with each source callback request. 

<!doctype html>
<html >
<head>
  <meta charset="utf-8">
  <title>jQuery UI 自动完成（Autocomplete） - XML 数据</title>
  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css" rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <script src="//code.jquery.com/jquery-1.9.1.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" ></script>
  <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css" rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank"  rel="external nofollow" target="_blank" >
  <style>
  .ui-autocomplete-loading { background: white url('images/ui-anim_basic_16x16.gif') right center no-repeat; }
  </style>
  <script>
  $(function() {
    function log( message ) {
      $( "<div/>" ).text( message ).prependTo( "#log" );
      $( "#log" ).attr( "scrollTop", 0 );
    }
 
    $.ajax({
      url: "london.xml",
      dataType: "xml",
      success: function( xmlResponse ) {
        var data = $( "geoname", xmlResponse ).map(function() {
          return {
            value: $( "name", this ).text() + ", " +
              ( $.trim( $( "countryName", this ).text() ) || "(unknown country)" ),
            id: $( "geonameId", this ).text()
          };
        }).get();
        $( "#birds" ).autocomplete({
          source: data,
          minLength: 0,
          select: function( event, ui ) {
            log( ui.item ?
              "Selected: " + ui.item.value + ", geonameId: " + ui.item.id :
              "Nothing selected, input was " + this.value );
          }
        });
      }
    });
  });
  </script>
</head>
<body>
 
<div class="ui-widget">
  <label for="birds">London 匹配：</label>
  <input id="birds">
</div>
 
<div class="ui-widget" style="margin-top:2em; font-family:Arial">
  结果：
  <div id="log" style="height: 200px; width: 300px; overflow: auto;" class="ui-widget-content"></div>
</div>
 
 
</body>
</html>


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