Checkbox Object
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.
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).
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 |
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 |
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 |
|
|
