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// ---------------------------------------------------------- | |
// A short snippet for detecting versions of IE in JavaScript | |
// without resorting to user-agent sniffing | |
// ---------------------------------------------------------- | |
// If you're not in IE (or IE version is less than 5) then: | |
// ie === undefined | |
// If you're in IE (>=5) then you can determine which version: | |
// ie === 7; // IE7 | |
// Thus, to detect IE: | |
// if (ie) {} |
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// everyone's new favorite closure pattern: | |
(function(window,document,undefined){ ... })(this,this.document); | |
// when minified: | |
(function(w,d,u){ ... })(this,this.document); | |
// which means all uses of window/document/undefined inside the closure | |
// will be single-lettered, so big gains in minification. | |
// it also will speed up scope chain traversal a tiny tiny little bit. |