fix(jqLite): set event's monkey patched methods to null (on IE7)

This commit is contained in:
Vojta Jina 2012-02-23 23:41:41 -08:00
parent 3171f21591
commit 230f29d0a7

View file

@ -474,11 +474,13 @@ function createEventHandler(element) {
event.returnValue = false; //ie
};
}
if (!event.stopPropagation) {
event.stopPropagation = function() {
event.cancelBubble = true; //ie
};
}
if (!event.target) {
event.target = event.srcElement || document;
}
@ -502,10 +504,17 @@ function createEventHandler(element) {
// Remove monkey-patched methods (IE),
// as they would cause memory leaks in IE8.
// It shouldn't affect normal browsers, as their native methods are defined on prototype.
delete event.preventDefault;
delete event.stopPropagation;
delete event.isDefaultPrevented;
if (msie < 8) {
// IE7 does not allow to delete property on native object
event.preventDefault = null;
event.stopPropagation = null;
event.isDefaultPrevented = null;
} else {
// It shouldn't affect normal browsers (native methods are defined on prototype).
delete event.preventDefault;
delete event.stopPropagation;
delete event.isDefaultPrevented;
}
};
eventHandler.fns = [];
return eventHandler;