Incorect rusult from $.isFunction(obj)

// jQuery core code:

isFunction: function( obj ) {

return toString.call(obj) === "[object Function]";

When initialize flash object (Safari 5) and test it methods:

var flashFunction = $('object', $(iFrame.contentWindow.document))[0].flashFunction

1) typeof flashFunction = function

2) $.isFunction(flashFunction) = false

3) toString.call(flashFunction) = [object cRuntimeMethod]

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Change History (5)

This is similar to the problem in IE with native "functions" like

window.alert

. I am not sure that particular case is fixable, but if the code isn't fixed we should update the docs so I'll leave this open for now.

Why didn't we try - typeof obj === "function", just wondering??

keywords:	isFunction flash → needsreview
milestone:	1.4.3
priority:	→ low
status:	new → open

I don't see this as a major issue - very much edge case, but for the sake of being thorough, something like this would do the trick:

isFunction: function( obj ) {

var signature = toString.call(obj);

return signature === "[object Function]" || signature === "[object cRuntimeMethod]";

}

But this is so far on the edge... "needsreview" to say the least.

resolution:	→ worksforme
status:	open → closed

This browser bug seems to have been fixed. The latest versions of Chrome 10 and Safari 5 return "function" for typeof.

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