<div style=" width:960px; margin:0 auto; text-align:center; margin-top:100px"> <span id="span_dt_dt"></span> </div> <script> function show_date_time() { window.setTimeout("show_date_time()", 1000); BirthDay = new Date("3/11/2014 00:00:01"); today = new Date(); //总时间 timeold = (today.getTime() - BirthDay.getTime()); sectimeold = timeold / 1000 secondsold = Math.floor(sectimeold); msPerDay = 24 * 60 * 60 * 1000 e_daysold = timeold / msPerDay daysold = Math.floor(e_daysold); e_hrsold = (e_daysold - daysold) * 24; hrsold = Math.floor(e_hrsold); e_minsold = (e_hrsold - hrsold) * 60; minsold = Math.floor((e_hrsold - hrsold) * 60); seconds = Math.floor((e_minsold - minsold) * 60); span_dt_dt.innerHTML = "有杂网已运行:" + daysold + "天" + hrsold + "小时" + minsold + "分" + seconds + "秒"; } show_date_time(); </script>