Status: Unconfirmed
Owner: ----
Labels: Type-Bug Pri-2 OS-All Area-Misc
New issue 14875 by alexander.shipilov: null events when
Function.prototype.toString is overriden
http://code.google.com/p/chromium/issues/detail?id=14875
Chrome Version : 2.0.172.31
URLs (if applicable) :
Other browsers tested:
Add OK or FAIL after other browsers where you have tested this issue:
Safari 4: not tested
Firefox 3.x: OK
IE 7: OK
IE 8: not tested
Next code illustrates problem:
Note: body onload handler must be defined
<html>
<head>
<script>
// Store current toString
Function.prototype.__toString = Function.prototype.toString;
// Override toString
Function.prototype.toString = function() {
// Call previous method
return this.__toString();
};
// Event handler
function documentOnClick(_event) {
alert('Event is null: ' + String(_event == null));
};
// Add listener to document's click
document.addEventListener('click', documentOnClick, false);
</script>
</head>
<body onload="void(0)"></body>
</html>
What is the expected result?
Event handler's argument is instance of MouseEvent
What happens instead?
Argument is null
Please provide any additional information below. Attach a screenshot if
possible.
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