XUL:Attribute:id

From MDC

« XUL Reference home

id

Type: element id, must be unique in the window

A unique identifier so that you can identify the element with. You can use this as a parameter to getElementById() and other DOM functions and to reference the element in style sheets.

[edit] Example

<button id="foo" label="Click Me" oncommand="doSomething()"/>

<script>
function doSomething(){
    var myButton = document.getElementById('foo');
    myButton.setAttribute('label','The button was pressed');
}
</script>

A more abstract version of the above would be a

<button id="foo" label="Click Me" oncommand="setWidgetLabel(this, 'I was pressed')"/>
<script>
function setWidgetLabel(idName, newCaption){
   document.getElementById( idName.id ).setAttribute('label',newCaption)
}

</script>

[edit] See also

name