<script type="text/javascript"> //显示时间函数 var id;//设置该id主要是为了之后的暂停和取消显示时间用到clearInterval(这里传id); function showTime(){ var divOne=document.getElementById("one"); var d=new Date(); var timStr=d.getFullYear()+"-"+(d.getMonth()+1)+"-"+d.getDate()+" "+ d.getHours()+":"+d.getMinutes()+":"+d.getSeconds()+":"+d.getMilliseconds(); divOne.innerHTML=timStr; id=setInterval(function(){ d=new Date(); timStr=d.getFullYear()+"-"+(d.getMonth()+1)+"-"+d.getDate()+" "+ d.getHours()+":"+d.getMinutes()+":"+d.getSeconds()+":"+d.getMilliseconds(); divOne.innerHTML=timStr; }, 1) } //暂停时间函数 function stopTime(){ clearInterval(id); } //取消显示时间函数 function cancelTime(){ var divOne=document.getElementById("one"); clearInterval(id); divOne.innerHTML=''; } </script> </head> <body> <input type="button" value="显示时间" οnclick="showTime()"> <input type="button" value="暂停时间" οnclick="stopTime()"> <input type="button" value="取消时间" οnclick="cancelTime()"> <div id="one"></div> </body>