这个 jquery 刷新脚本安全吗？

Question

I use this script to update a div , gathering new information constantly. It works well in every browser, except in Google Chrome where it hangs after a while and the browser turns blue and a small sad graphic tells me there's something wrong. The rest of the browser stays intact, it's only the affected tab so it has to do something with this code:

<script type="text/javascript">
    setInterval("SANAjax();", 500); 
    $(function(){
        SANAjax = function(){
            $("#target").load("page.php");
        }
    });
</script>

Is it not safe to refresh a div that many times? Will it overload or what not?

Answer 1

I would do it a bit different than that.

Untested:

$(function(){
    SANAjax();
});

function SANAjax(){
    $('#target').load('page.php', function(){
        setTimeout(SANAjax, 500);
    });
}

This makes sure a new request is being made after the current one is finished. http://api.jquery.com/load/

Answer 2

The simple way

$(function(){
        setInterval(function(){
            $('#target').load('page.php');
        }, 500)
});