String object
String objects are used to process text (strings).
String object creation method: new String().
Grammar
var txt = new String("
string
");
Or simpler way:
var txt = " string ";For the String Objects tutorial, check out the JavaScript String Objects tutorial.
String object properties
| Attributes | describe |
|---|---|
| constructor | Quote for functions that create this object |
| length | String length |
| prototype | Allows you to add properties and methods to objects |
String object method
| method | describe |
|---|---|
| charAt() | Returns the characters in the specified location. |
| charCodeAt() | Returns a Unicode encoding of characters in the specified location. |
| concat() | Connect two or more strings and return to a new string. |
| fromCharCode() | Transfer Unicode encoding to characters. |
| indexOf() | Returns a specified string value in the first place in the string. |
| lastIndexOf() | Search the string from the back. |
| match() | Find a match of one or more regular expressions. |
| replace() | Find the matching substrings in the string and replace the substrings that match the regular expression. |
| search() | Find the value that matches the regular expression. |
| slice() | Extract the fragment of the string and return to the extracted portion in the new string. |
| split() | Split the string into a string array. |
| substr() | Extract the specified number of characters in the string from the starting index number. |
| substring() | Extract characters between two specified index numbers in the string. |
| toLowerCase() | Convert strings to lowercase. |
| toUpperCase() | Convert the string to uppercase. |
| trim() | Remove the blank on both sides of the string |
| valueOf() | Returns the original value of a string object. |
String HTML wrapping method
The HTML wrapper method returns a string with the appropriate HTML tag added.
| method | describe |
|---|---|
| anchor() | Create an HTML anchor. |
| big() | Use a large font to display a string. |
| blink() | Show a flashing string. |
| bold() | Use a bold display string. |
| fixed() | Display strings with typewriter text. |
| fontcolor() | Use the specified colors to display the string. |
| fontsize() | Use the specified size to display the string. |
| italics() | Use a slope to display a string. |
| link() | Display strings as a link. |
| small() | Use a small number to display a string. |
| strike() | A string for displaying the deletion of deletion. |
| sub() | The string is displayed as the subscript. |
| sup() | The string is displayed as a lacquered mark. |