js timer reload page

1<script>
2    window.setInterval('refresh()', 10000); 	
3    // Call a function every 10000 milliseconds 
4    // (OR 10 seconds).
5
6    // Refresh or reload page.
7    function refresh() {
8        window .location.reload();
9    }
10</script>

1//BY JS
2setTimeout(function() {
3  location.reload();
4}, 30000);
5//NOTE: YOU COULD DO IT BY HTML5 LIKE THIS:
6<meta http-equiv="refresh" content="30"/>
7