What's the differenct between passing a function and the function call itself in javascript?

Posted by Mingus Rude on Stack Overflow See other posts from Stack Overflow or by Mingus Rude
Published on 2010-05-31T14:39:16Z Indexed on 2010/05/31 14:43 UTC
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In the application I'm building I'm polling for a status update and I have noticed that if the call is made as follows the timeout fires continuously:

setTimeout($.get("http://localhost:8080/status", function(data) { UpdateStatus(data);}), 1000);

While if use a function instead the timeout fires every 1000 ms:

 setTimeout(function() {$.get("http://localhost:8080/status", function(data) { UpdateStatus(data);})}, 1000);

Why?

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