Radio 对象

The Radio object represents a radio button in an HTML form. For each instance of an <input type="radio"> tag in an HTML form, a Radio object is created.
Radio对象代表了HTML表单中Radio按钮，每当HTML表单中出现<input type="radio">标签就意味着Radio被建立起来了

You can access a Radio object by indexing the elements array (by number or name) of the corresponding form or by using getElementById().
你可以从表单元数组的数字或是名称来访问Radio对象，或是使用getELmentById()来访问它

IE: Internet Explorer, F: Firefox, N: Netscape, W3C: World Wide Web Consortium (Internet Standard).

Radio 对象属性

Property 属性	Description 描述	IE	F	N	W3C
accept	Sets or returns a list of content types, which the server processing this form will handle correctly 设置或返回内容的类型，让服务器更准确的处理这个表单。	-			Yes
accesskey	Sets or returns the keyboard key to access the radio button 设置或返回能够访问这radio按钮的键盘按键。	4			Yes
align	Sets or returns the alignment of the radio button according to the surrounding text 设置或返回radio按钮相对周围文字的对齐方式	-			Yes
alt	Sets or returns an alternate text to display if the browser does not support radio buttons 设置或返回对于那些无法支持radio按钮浏览器的替换文字。	-			Yes
checked	Sets or returns the current state of the radio button (true if selected and false if not selected) 设置或返回radio按钮当前的状态（当被选中则为true，false则没有选中）	3	1	2	Yes
defaultChecked	Sets or returns the default value of the checked attribute (true if checked by default and false if not) 设置或返回被选中属性的默认值（被默认的选中则为真，不然则为假）	3	1	2	Yes
disabled	Sets or returns whether or not the radio button should be disabled 设置或返回radio按钮是否应该禁用。	5	1		Yes
form	Returns a reference to the radio button's parent form 返回包含radio按钮表单的参考	3	1	2	Yes
id	Sets or returns the id of the radio button (In IE 4 this property is read-only) 设置或返回radio按钮的id(在IE4中这个属性只读)	4	1		No
name	Sets or returns the name of the radio button 设置或返回radio按钮的name	3	1	2	Yes
size	Sets or returns the size of the radio button 设置或返回radio按钮的大小	3			Yes
tabIndex	Sets or returns the tab order for the radio button 设置或返回radio按钮由tab顺序所定义的索引	4			Yes
type	The type of the form element. For a radio object it will always be "radio" 返回表单元素类型，是radio按钮的话就会返回为"radio"	3	1	3	Yes
value	Sets or returns the value of the value attribute of the radio button 设置或返回radio按钮属性的值	3	1	2	Yes

Radio 对象方法

Method 方法	Description 描述	IE	F	N	W3C
blur()	Removes focus from the radio button 取消对radio按钮的聚焦	4	1	2	Yes
click()	Simulates a mouse-click on the radio button 模拟鼠标点击radio按钮	4	1		Yes
focus()	Sets focus on the radio button radio按钮获得聚焦	3	1	2	Yes
select()	Selects the radio button 选中radio按钮	4	1	2	No

Radio 对象方法

Syntax: object.event_name="someJavaScriptCode"
语法：对象.事件名称=“一些JS代码”

Event 事件	Description 描述	IE	F	N	W3C
onBlur	Executes some code when the radio button loses focus 当radio按钮失去聚焦的时候执行代码	4	1	2
onClick	Executes some code when the user clicks on the radio button 当用户点击radio按钮的时候执行一些代码	4
onFocus	Executes some code when the radio button gets focus 当radio按钮得到聚焦的时候执行一些代码	3	1	2
onSelectStart	Executes some code when the radio button is selected 当radio按钮被选中的时候执行一些代码	4

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