console 命令行工具 X clear

console

var d = new Date('Thu May 12 2016 08:00:00 GMT+0800 (中国标准时间)');   
var datetime=d.getFullYear() + '-' + (d.getMonth() + 1) + '-' + d.getDate() + ' ' + d.getHours() + ':' + d.getMinutes() + ':' + d.getSeconds(); 
document.getElementById("date").innerHTML=datetime

<div id="date">
</div>