Checkbox 对象

The Checkbox object represents a checkbox in an HTML form. For each instance of an <input type="checkbox"> tag in an HTML form, a Checkbox object is created.
Checkbox对象可代表一个HTML表单中的checkbox(复选框)。每当有<input type="checkbox">标签出现在HTML表单，一个Checkbox对象就建立起来了。

You can access a Checkbox object by indexing the elements array (by number or name) of the corresponding form or by using getElementById().
你可以通过元素数组索引或是使用getElementById()来访问Checkbox对象。

IE: Internet Explorer, F: Firefox, N: Netscape, W3C: World Wide Web Consortium (互联网标准).

Checkbox 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 checkbox 设置或返回能够访问这复选框的键盘按键。	4			Yes
align	Sets or returns the alignment of the checkbox according to the surrounding text 设置或返回复选框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 checkboxes 设置或返回对于那些无法支持checkbox浏览器的替换文字。	-			Yes
checked	Sets or returns whether or not the checkbox is checked 设置或返回checkbox是否被选中了	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 checkbox should be disabled 设置或返回复选框是否应该禁用。	3	1		Yes
form	Returns a reference to the form that contains the checkbox 返回包含checkbox表单的参考	3	1	2	Yes
id	Sets or returns the id of the checkbox (In IE 4 this property is read-only) 设置或返回checkbox的id(在IE4中这个属性只读)	4	1		No
name	Sets or returns the name of the checkbox 设置或返回checkbox的name	3	1	2	Yes
tabIndex	Sets or returns the index that defines the tab order for the checkbox 设置或返回checkbox由tab顺序所定义的索引	4			Yes
type	Returns the type of the form element. For a checkbox it will be "checkbox" 返回表单元素类型，是checkbox的话就会返回为"checkbox"	4	1	3	Yes
value	Sets or returns the value of the value attribute of the checkbox 设置或返回checkbox属性的值	3	1	2	Yes

标准属性

Property 属性	Description 描述	IE	F	O	W3C
className	Sets or returns the class attribute of an element 设置或返回元素的class属性	5	1	9	Yes
dir	Sets or returns the direction of text 设置或返回文字方向	5	1	9	Yes
lang	Sets or returns the language code for an element 设置或返回元素的代码语言	5	1	9	Yes
title	Sets or returns an element's advisory title 设置或返回元素的咨询标题	5	1	9	Yes

Checkbox 对象方法

Method 方法	Description 描述	IE	F	N	W3C
blur()	Removes focus from the checkbox 删除checkbox的焦距	3	1	2	Yes
click()	Simulates a mouse-click in the checkbox 在checkbox中模仿鼠标点击	3	1	2	Yes
focus()	Gives focus to the checkbox 为checkbox加上聚焦	3	1	2	Yes

Checkbox Object Events
checkbox对象事件

Syntax: object.event_name="someJavaScriptCode"
语法：对象.事件名 = "一些js代码"

Event 事件	Description 描述	IE	F	N	W3C
onBlur	Executes some code when the checkbox loses focus 当checkbox失去聚焦的时候执行一些代码	3	1	2
onClick	Executes some code when the checkbox is clicked 当checkbox被点的时候执行一些代码	3	1	2
onFocus	Executes some code when the checkbox gets focus 当checkbox得到聚焦的时候执行一些代码	3	1	2
onMouseDown	Executes some code when a mouse button is pressed 当鼠标按钮按住的时候执行一些代码	4	1	4
onMouseUp	Executes some code when a mouse button is released 当鼠标按钮释放的时候执行一些代码	4	1	4

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