jquery ajax requests increase of memory

I have an ajax request every 1 second that pulls a JSON from server and manipulate a div. After a while, browser shows a large memory use in task manager about 200, 30开发者_如何学编程0, 500 MB and its still growing. How can I replace new data with old without caching or anything that affect memory?

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Try nulling out the existing JSON file before each request, and be sure its writing to the same variable. Is this happening inside a loop? Move the variable outside of the loop and refer to it instead.

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Try using cache: false:

$.ajax({
url: "test.html",
cache: false,
success: function(html){
$("#results").append(html);
}
});