Javascript Checkbox Object
The Javascript 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.
You can access a Checkbox object by indexing the elements array (by number or name) of the corresponding form or by using getElementById().
IE: Internet Explorer, F: Firefox, N: Netscape, W3C: World Wide Web Consortium (Internet Standard).
Javascript Checkbox Object Properties
Property |
Description |
IE |
F |
N |
W3C |
accept |
Sets or returns a list of content types, which the server processing this form will handle correctly |
- |
|
|
Yes |
accessKey |
Sets or returns the keyboard key to access the checkbox |
4 |
|
|
Yes |
align |
Sets or returns the alignment of the checkbox according to the surrounding text |
- |
|
|
Yes |
alt |
Sets or returns an alternate text to display if the browser does not support checkboxes |
- |
|
|
Yes |
checked |
Sets or returns whether or not the checkbox is checked |
3 |
1 |
2 |
Yes |
defaultChecked |
Sets or returns the default value of the checked attribute (true if checked by default and false if not) |
3 |
1 |
2 |
Yes |
disabled |
Sets or returns whether or not the checkbox should be disabled |
3 |
1 |
|
Yes |
form |
Returns a reference to the form that contains the checkbox |
3 |
1 |
2 |
Yes |
id |
Sets or returns the id of the checkbox (In IE 4 this property is read-only) |
4 |
1 |
|
No |
name |
Sets or returns the name of the checkbox |
3 |
1 |
2 |
Yes |
tabIndex |
Sets or returns the index that defines the tab order for the checkbox |
4 |
|
|
Yes |
type |
Returns the type of the form element. For a checkbox it will be "checkbox" |
4 |
1 |
3 |
Yes |
value |
Sets or returns the value of the value attribute of the checkbox |
3 |
1 |
2 |
Yes |
Javascript Checkbox Object Methods
Method |
Description |
IE |
F |
N |
W3C |
blur() |
Removes focus from the checkbox |
3 |
1 |
2 |
Yes |
click() |
Simulates a mouse-click in the checkbox |
3 |
1 |
2 |
Yes |
focus() |
Gives focus to the checkbox |
3 |
1 |
2 |
Yes |
Javascript Checkbox Object Events
Syntax: object.event_name="someJavaScriptCode"
Event |
Description |
IE |
F |
N |
W3C |
onBlur |
Executes some code when the checkbox loses focus |
3 |
1 |
2 |
|
onClick |
Executes some code when the checkbox is clicked |
3 |
1 |
2 |
|
onFocus |
Executes some code when the checkbox gets focus |
3 |
1 |
2 |
|
onMouseDown |
Executes some code when a mouse button is pressed |
4 |
1 |
4 |
|
onMouseUp |
Executes some code when a mouse button is released |
4 |
1 |
4 |
|
| 
