How do I refresh a DIV content?

javascript php jquery html

PHP Snippet 1:

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

PHP Snippet 2:

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

PHP Snippet 3:

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

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

PHP Snippet 4:

$('#yourDiv').load('#yourDiv > *')

PHP Snippet 5:

$.get("/YourUrl", {},
      function (returnedHtml) {
      $("#here").html(returnedHtml);
});