用js实现倒计时效果 ：
html:
1 <body> 2 <div id="con"> 3 4 </div> 5 </body>
javasript:
1 <script> 2 window.onload=function(){ 3 4 function fn_a(){ 5 6 var ocon=document.getElementById('con'); 7 var date=new Date(); 8 var date_a=new Date("2016/6/6,08:00:00"); 9 var time=parseInt((date_a.getTime()-date.getTime())/1000); 10 var day=parseInt(time/(24*60*60)); 11 var hours=parseInt((time/3600)%24); 12 13 var minute=parseInt((time/60)%60); 14 var second=parseInt(time%60); 15 ocon.innerHTML='距离2016/6/6,08:00:00剩余时间:</br>'+day+'天'+hours+'小时'+minute+'分钟'+second+'秒'; 16 } 17 setInterval(fn_a,30); 18 } 19 </script> 20