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Added new function-testing code that is completely cross-browser compatible.

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This commit is contained in:
John Resig 2007-01-22 02:17:47 +00:00
parent e45dbf29f8
commit b81ea5f9ba
1 changed files with 4 additions and 1 deletions
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5
src/jquery/jquery.js vendored
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@ -1222,8 +1222,11 @@ jQuery.extend({
$ = jQuery._$;
},
// This may seem like some crazy code, but trust me when I say that this
// is the only cross-browser way to do this. --John
isFunction: function( fn ) {
return fn && typeof fn == "function";
return !!fn && typeof fn != "string" &&
typeof fn[0] == "undefined" && /function/i.test( fn + "" );
},
/**