Definitions and usages
HTML5 - the option ; label defines an option in the drop-down list.
The difference between HTML 4.01 and HTML 5
In HTML 5, the label is also used in the new element, the lt;datalist.
Tips and comments
Note: The label can be used without any property, but usually requires the value property, which defines the data sent to the server.
Note: Please use it in conjunction with the hashtags . Elsewhere, the label is meaningless.
Example
<select> <option value="volvo">Volvo</option> <option value="saab">Saab</option> <option value="opel" selected="selected">Opel</option> <option value="audi">Audi</option> </select>
Property
| Property | Value | Describe | 4 | 5 |
|---|---|---|---|---|
| disabled | disabled | It is stated that this option should be disabled on first load. | 4 | 5 |
| label | text | Defines the labels that are used when using slt;optgroup. | 4 | 5 |
| selected | selected | The specified options (when first displayed in the list) are displayed as selected. | 4 | 5 |
| value | text | Define the option values that are sent to the server. | 4 | 5 |
The standard property
class, contenteditable, contextmenu, dir, draggable, id, irrelevant, lang, ref, registrationmark, tabindex, template, title
For a complete description, visit standard properties in HTML 5.
The event property
onabort, onbeforeunload, onblur, onchange, onclick, oncontextmenu, ondblclick, ondrag, ondragend, ondragenter, ondragleave, ondragover, ondragstart, ondrop, onerror, onfocus, onkeydown, onkeypress, onkeyup, onload, onmessage, onmousedown, onmousemove, onmouseover, onmouseout, onmouseup, onmousewheel, onresize, onscroll, onselect, onsubmit, onunload
For a complete description, visit event properties in HTML 5.