function sample(){ $("#but").click(function () { don(); }); var timer; var delay = 1000; var loop = function () { var data; data = new XMLHttpRequest(); data.open("GET", "data.txt", false); data.send(null); var strx = data.responseText; $("#cou").html(strx); clearTimeout(timer); timer = setTimeout(loop, delay); } loop(); } function don(){ str = "delta.php?c2=" + "545abc"; $("#memo").load(str); }