功能:显示时钟
<html>
<head><title>test</title></head><body οnlοad="startTime();"><div id="txt"></div></body></html><script type="text/javascript"> function startTime() { var today = new Date() var y = today.getFullYear(); var M = today.getMonth() + 1 var d = today.getDate(); var h = today.getHours() var m = today.getMinutes() var s = today.getSeconds() // add a zero in front of numbers<10 m = checkTime(m) s = checkTime(s) document.getElementById('txt').innerHTML = y + "-" + M + "-" + d + " " + h + ":" + m + ":" + s; t = setTimeout('startTime()', 500) //定时器,500ms执行递归一次 } function checkTime(i) { if (i < 10) { i = "0" + i } return i }</script>