HTML DOM select 对象

选择对象

Select 对象代表一个 HTML <select> 元素。

您可以使用 getElementById() 访问 <select> 元素：

var x = document.getElementById("mySelect");

提示：您还可以通过搜索来访问 Select 对象元素表格的集合。

您可以使用 document.createElement() 方法创建 <select> 元素：

var x = document.createElement("SELECT");

Collection	Description
options	Returns a collection of all the options in a drop-down list

Property	Description
autofocus	Sets or returns whether a drop-down list should automatically get focus when the page loads
disabled	Sets or returns whether the drop-down list is disabled, or not
form	Returns a reference to the form that contains the drop-down list
length	Returns the number of <option> elements in a drop-down list
multiple	Sets or returns whether more than one option can be selected from the drop-down list
name	Sets or returns the value of the name attribute of a drop-down list
selectedIndex	Sets or returns the index of the selected option in a drop-down list
size	Sets or returns the value of the size of a drop-down list
type	Returns which type of form element a drop-down list is
value	Sets or returns the value of the selected option in a drop-down list

Method	Description
add()	Adds an option to a drop-down list
checkValidity()
remove()	Removes an option from a drop-down list

Select 对象还支持标准特性和事件。