(function () {
var tian = document.getElementsByClassName('JS-tian')[0];
var shi = document.getElementsByClassName('JS-shi')[0];
var fen = document.getElementsByClassName('JS-fen')[0];
var miao = document.getElementsByClassName('JS-miao')[0];
var endTime = new Date('2117/07/12 23:59:59').getTime() + 1000;
var interval = null;
interval = setInterval(function () {
var syhm = endTime - Date.now(); // 剩余毫秒
if (syhm >= 0) {
tian.innerText = Math.floor(syhm / 1000 / 60 / 60 / 24);
shi.innerText = Math.floor(syhm / 1000 / 60 / 60 % 24);
fen.innerText = Math.floor(syhm / 1000 / 60 % 60);
miao.innerText = Math.floor(syhm / 1000 % 60);
} else {
clearInterval(interval);
}
},0);
})();
htmlDemo:
距结束还剩：天时分秒
