setInterval on IE10

Question

The setInterval function does not work on I.E. 10. I have a web page that when a form is submitted, it will trigger a long process on the server for downloading a file. I use setInterval to repeatly poll the server for progress so that the user gets some kind of update on the progress.

The ProgressServlet will only get called once only. I did not test this on another web browser because it is "illegal" to use another browser in my company.

<script>

var myVar;

function validateForm()
{
	//validation logic omitted
        myVar = setInterval(getProgress(), 1000);
	return true;	
}			


function getProgress() {
	//ProgressServelt will return progress of the long process on the server
	$.get("ProgressServlet", $.now(), function(res) {
		if (res != "9999" || res == "No value avaliable")  {
			$("#progress").html(res);

		} else {
			$("#progress").html("Stopped: " + res);
			clearInterval(myVar);
		}
	});
		
}

</script>

<form method="post" action="CreateServlet" name = "create">

Change Number(s):<br>
<input type="text" name="change" id="change">
<p></p>
<input type="submit" value="Download" onClick="return validateForm()">

</form>
<p></p>
<button  id="send" name="send">Display</button>

Answer 1

Change

myVar = setInterval(getProgress(), 1000);

to

myVar = setInterval(getProgress, 1000);

That is: pass the function, not what it returns.