计时器
可以放在侧边栏或者页脚页首中,实现方法如下,具体使用场景因人而异
复制代码
<div id="showsectime"></div>
<script type="text/javascript">
function NewDate(str) {
str = str.split('-');
var date = new Date();
date.setUTCFullYear(str[0], str[1] - 1, str[2]);
date.setUTCHours(0, 0, 0, 0);
return date;
}
function showsectime() {
var birthDay =NewDate("2017-08-23");
var today=new Date();
var timeold=today.getTime()-birthDay.getTime();
var sectimeold=timeold/1000
var secondsold=Math.floor(sectimeold);
var msPerDay=24*60*60*1000; var e_daysold=timeold/msPerDay;
var daysold=Math.floor(e_daysold);
var e_hrsold=(daysold-e_daysold)*-24;
var hrsold=Math.floor(e_hrsold);
var e_minsold=(hrsold-e_hrsold)*-60;
var minsold=Math.floor((hrsold-e_hrsold)*-60); var seconds=Math.floor((minsold-e_minsold)*-60).toString();
document.getElementById("showsectime").innerHTML = "xxx"+daysold+"天"+hrsold+"小时"+minsold+"分"+seconds+"秒";
setTimeout(showsectime, 1000);
}showsectime();
</script>
转自:博客园美化 - 不忘编码 - 博客园 (cnblogs.com)