function times() { var imgMM = document.getElementById("imgMM"); if (!imgMM) { return; } var currenttime = new Date(); var filename = currenttime.getHours() + "_" + currenttime.getMinute.jpg"; //document.write(filename); imgMM.src = filename; } setInterval("times()", 1000);
页面内容：
<body οnlοad="times()"> <img src="" id="imgMM" /> </body>
