js 日付カスタム関数がスクリプトの実行を遅らせる_javascript スキル

复制代码代码如下:

function late(numberMillis){
var now = new Date( );
var exitTime = now.getTime()numberMillis;
while(true){
now = new Date();
if(now.getTime() > exitTime)
return;
}
}
document.write("");