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    <p>You might take advantage of the fact that JS functions are also objects -- which means they can have properties.</p> <p>For instance, quoting the example given on the (now vanished) article <a href="http://web.archive.org/web/20120502014437/http://www.tipstrs.com/tip/1084/Static-variables-in-Javascript" rel="noreferrer">Static variables in Javascript</a>:</p> <pre><code>function countMyself() { // Check to see if the counter has been initialized if ( typeof countMyself.counter == 'undefined' ) { // It has not... perform the initialization countMyself.counter = 0; } // Do something stupid to indicate the value alert(++countMyself.counter); } </code></pre> <p>If you call that function several time, you'll see the counter is being incremented.</p> <p>And this is probably a much better solution than poluting the global namespace with a global variable.</p> <p><br> And here is another possible solution, based on a closure : <a href="http://chamnapchhorn.blogspot.com/2008/07/trick-to-use-static-variables-in.html" rel="noreferrer">Trick to use static variables in javascript</a> : </p> <pre><code>var uniqueID = (function() { var id = 0; // This is the private persistent value // The outer function returns a nested function that has access // to the persistent value. It is this nested function we're storing // in the variable uniqueID above. return function() { return id++; }; // Return and increment })(); // Invoke the outer function after defining it. </code></pre> <p>Which gets you the same kind of result -- except, this time, the incremented value is returned, instead of displayed.</p>
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    1. POStatic variables in JavaScript
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    1. USPascal MARTIN
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    1. COEpic win. Saving both those code blocks.
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    2. CO+1 for static variable trick
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    3. COas a shortcut, you could just do `countMyself.counter = countMyself.counter || initial_value;` if the static variable is never going to be falsey (false, 0, null, or empty string)
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