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Added domContains()

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Lots of event handlers need this
This commit is contained in:
Jeremy Ruston 2012-03-07 17:40:59 +00:00
parent b1b893c692
commit e17772c830
1 changed files with 10 additions and 0 deletions
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10
js/Utils.js
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@ -228,4 +228,14 @@ utils.nextTick = function(fn) {
} }
}; };
/*
Determines whether element 'a' contains element 'b'
Code thanks to John Resig, http://ejohn.org/blog/comparing-document-position/
*/
utils.domContains = function(a,b) {
return a.contains ?
a != b && a.contains(b) :
!!(a.compareDocumentPosition(b) & 16);
};
})(); })();