How do I refresh a DIV content?

For div refreshing without creating div inside yours with same id, you should use this inside your function

$("#yourDiv").load(" #yourDiv > *");

To reload a section of the page, you could use jquerys load with the current url and specify the fragment you need, which would be the same element that load is called on, in this case #here:

function updateDiv()
{ 
    $( "#here" ).load(window.location.href + " #here" );
}

• Don't disregard the space within the load element selector: + " #here"

This function can be called within an interval, or attached to a click event

Complete working code would look like this:

<script> 
$(document).ready(function(){
setInterval(function(){
      $("#here").load(window.location.href + " #here" );
}, 3000);
});
</script>

<div id="here">dynamic content ?</div>

self reloading div container refreshing every 3 sec.