Mbox content does not update on immediate page load

[adityaa92167761]

I have created an mbox using mboxCreate().

Whenever I change parameters, the content does not change immediately on page load.

Only after 2-3 refreshes, I am shown the correct data.

Following is the code snippet.

<script>
    window.onload = function(e){
          var cat = gup('category', location.href);
          mboxCreate("testMBox","profile.name="+cat);
          function gup( name, url ) {
            if (!url) url = location.href;
            name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
            var regexS = "[\\?&]"+name+"=([^&#]*)";
            var regex = new RegExp( regexS );
            var results = regex.exec( url );
            return results == null ? null : results[1];
        }
        }
</script>

The data is to be fetched from custom criteria defined in Target Recommendations.

I am using "at.js".

I am new to adobe target recommendations.

Thanks in advance.