HTML DOM SelectObject
Select Object
The Select object represents a drop-down list in an HTML form.
In an HTML form, a Select object is created each time a <select> tag appears.
You can access a Select object by iterating through the form's elements[] array, or by using document.getElementById().
Select Object Collections
W3C：W3C Standard.
| Collection | Description | W3C |
|---|---|---|
| options | Returns an array containing all the options in the drop-down list. | Yes |
Select Object Properties
| Property | Description | W3C |
|---|---|---|
| disabled | Sets or returns whether the drop-down list should be disabled. | Yes |
| form | Returns a reference to the form that contains the drop-down list. | Yes |
| length | Returns the number of options in the drop-down list. | Yes |
| multiple | Sets or returns whether multiple items can be selected. | Yes |
| name | Sets or returns the name of the drop-down list. | Yes |
| selectedIndex | Sets or returns the index number of the selected item in the drop-down list. | Yes |
| size | Sets or returns the number of visible rows in the drop-down list. | Yes |
| type | Returns the form type of the drop-down list. | Yes |
Select Object Methods
| Method | Description | W3C |
|---|---|---|
| add() | Adds an option to the drop-down list. | Yes |
| remove() | Removes an option from the drop-down list. | Yes |
Standard Properties and Events
The Select object also supports standardpropertiesandevents。
Other Extensions