How do I stop a jQuery long-polling request?

Question

I'm using...

   $.getJSON(url + "&callback=?", function (b) {
                .......
   });

for a long-polling request. Sometimes it is necessary that I stop the current request being made. Is this possible?

Answer 1

I think this works, but have never tried it for myself...

var theRequest = $.getJSON(url + "&callback=?", function (b) {
            .......
});

theRequest.abort();  // aborts the xmlhttprequest made

$.getJSON() should return the XMLHTTPRequest object, upon which you call the abort() method.

Answer 2

Not sure if you're aborting because it's taking too long, but if so you can change your $.getJSON call to $.ajax and set a timeout:

$.ajax({url: url, dataType:'json', data: "param1=" + params,timeout: 7000, success:resultsHandler })