基础 - 定时器

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setInterval(function () {

},2000);


倒计时

window.onload = function () {

    var oOldDate = new Date("2016/8/6 23:30:30");
    var oNewDate = new Date("2016/8/9 00:00:00");
    var nChaZhi = oNewDate.getTime()-oOldDate.getTime();
    var chaMiao = 1000;
    var chaFen = chaMiao*60;
    var chaShi = chaFen*60;
    setInterval(function(){
        nChaZhi-=1000;
        var miao = parseInt(nChaZhi%chaFen/chaMiao);
        var fen = parseInt(nChaZhi%chaShi/chaFen);
        var shi = parseInt(nChaZhi/chaShi);
        console.log(shi+"时"+fen+"分"+miao+"秒");
    },1000);

}

基础 - 定时器

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原文地址：http://www.cnblogs.com/WeWeZhang/p/5747755.html