Simple jQuery Ajax call leaks memory in Internet Explorer

Question

I created a web page that makes an Ajax call every second. In Internet Explorer 7, it leaks memory badly (20 MB in about 15 minutes).

The program is very simple. It

Answer 1

Just encountered this myself. I thought it was something to do with the UI library initially, but then it disappeared after I swapped in jQuery 1.5. for the version 1.4.2 that I was using. (1.4.4 didn't seem to fix the issue).

Answer 2

I've seen this, and I don't believe it's a memory leak per-se. It's just that the Ajax request returns with no data because of caching.

Add deliberate cache control, as in:

$.ajax({ url: 'http://xxxxxxxxxxxxxx/test', // The url returns an empty string
         dataType: 'html',
         cache: false,
         success: function(data){}
    });
    setTimeout('testJunk()',1000)

It's one of those things where stuff falls down the cracks, that is, does a specific thing with caching and XMLHttpRequest and jQuery doesn't use cache off by default.