-
id - Type: unique id
-
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.
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>
Note: Not specifying the
id attribute for a window or a prefwindow fills the console with the following warning message: Warning: Empty string passed to getElementById()