Untitled

<!DOCTYPE html>
<html>
<body>

<div id="id01"></div>

<script>
function ht(){

var xmlhttp = null;
var xmlhttp = new XMLHttpRequest();
var url = "myurl";
xmlhttp.onreadystatechange = function() {
        //if (xmlhttp.readyState == 4 && (xmlhttp.status == 200 || xmlhttp.status == 0)) {
                document.getElementById("id01").innerHTML = "";
                document.getElementById("id01").innerHTML = xmlhttp.responseText;
        //}
};
xmlhttp.open("GET", url, true);
xmlhttp.send();
}


setInterval(ht(), 1000);
</script>

</body>
</html>