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    <p>This is a classic JavaScript confusion between "scope" and "curly braces". It turns out that curly braces have little to do with scope in JavaScript. Scope only arises from <em>functions</em>.</p> <p>One consequence of this is that variables are always hoisted to the top of the scope, i.e. the nearest function. So your code is exactly equivalent to:</p> <pre><code>var all_cookies = [1,2,3,4,5,6]; var i; var route_num; var list_item; var newLi; for (i = 0; i &lt; all_cookies.length; i++) { route_num = all_cookies[i]; list_item = "&lt;li&gt;&lt;a href='#saved-route'&gt;"; list_item += "&lt;p&gt;" + route_num + "&lt;/p&gt;&lt;/a&gt;&lt;/li&gt;"; newLi = $(list_item); newLi.bind('click', function(){ alert(route_num); }); $('#saved-list').append(newLi); } </code></pre> <p>With this in mind, you can see how, since <code>route_num</code> is the same variable every time through the loop, after the loop is over its value is set to <code>6</code>, and in the future whenever the click handler is called, the <code>6</code> is what you see.</p> <p>One way to fix this is to wrap the contents of your loop in a self-executing anonymous function:</p> <pre><code>var all_cookies = [1,2,3,4,5,6]; for (var i = 0; i &lt; all_cookies.length; i++) { (function () { var route_num = all_cookies[i]; var list_item = "&lt;li&gt;&lt;a href='#saved-route'&gt;"; list_item += "&lt;p&gt;" + route_num + "&lt;/p&gt;&lt;/a&gt;&lt;/li&gt;"; var newLi = $(list_item); newLi.bind('click', function(){ alert(route_num); }); $('#saved-list').append(newLi); }()); } </code></pre> <p>That way, when the variables get hoisted, they will just get hoisted to the top of that inner self-executing function, and so there will be different instances of them for each run through the loop.</p>
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    1. COOoooo. Likes :). I came up with this solution: http://jsfiddle.net/n6FU5/2/, though not as pretty, it has a funny function inside xD
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    2. COGenius - thank you. Good clarification on scope too!
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    3. CO+1, nice solution, although I wouldn't be too happy if I'd have to debug someone's code filled with fiddles like this. Nest a few of these, and it's an effective way to obfuscate your code to give your co-developers some nightmares. :)
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