The Internet Explorer Event Model: Disabling Event Handlers - Doc JavaScript
Disabling Event Handlers
Since Internet Explorer 4.0x doesn't feature a captureEvents()
method to capture events at a high level, it doesn't feature the releaseEvents()
method to stop capturing the events. Therefore, the only way to disable an event handler is to completely delete it. For example, the following statement specifies an onclick
event handler for the document
object:
document.onclick = functionName;
while the following statement disables the event handler:
document.onclick = null;
Once you assign null
to the event handler property, it does not have any function to process an event that comes its way. In other words, the null
value disables the object's event handler.
Note that this technique is also supported in Navigator. It can be used for any object, and for any event handler.
Created: December 30, 1997
Revised: December 30, 1997
URL: https://www.webreference.com/js/column10/disable.html