JS时间倒计时

TimeDown("span", '${date}')
/*
时间倒计时插件
TimeDown.js
*/
function TimeDown(id, endDateStr) {
//结束时间
var endDate = new Date(endDateStr);
//当前时间
var nowDate = new Date();
//相差的总秒数
var totalSeconds = parseInt((endDate - nowDate) / 1000);
//天数
var days = Math.floor(totalSeconds / (60 * 60 * 24));
//取模（余数）
var model = totalSeconds % (60 * 60 * 24);
//小时数
var hours = Math.floor(model / (60 * 60));
model = model % (60 * 60);
//分钟
var minutes = Math.floor(model / 60);
//秒
var seconds = model % 60;
//输出到页面
document.getElementById(id).innerHTML = "剩余:" + days + "天" + hours + "小时" + minutes + "分钟" + seconds + "秒";
//延迟一秒执行自己
setTimeout(function () {
TimeDown(id, endDateStr);
}, 1000)
}