function changetime(){
var ary = ["星期日","星期一","星期二","星期三","星期四","星期五","星期六"];
var Timehtml = document.getElementById('CurrentTime');
var date = new Date();
Timehtml.innerHTML = ''+date.toLocaleString()+' '+ary[date.getDay()];
}
2.第一种方法
window.onload=function(){
setInterval(function(){
var date=new Date();
var year=date.getFullYear(); //获取当前年份
var mon=date.getMonth()+1; //获取当前月份
var da=date.getDate(); //获取当前日
var day=date.getDay(); //获取当前星期几
var h=date.getHours(); //获取小时
var m=date.getMinutes(); //获取分钟
var s=date.getSeconds(); //获取秒
var d=document.getElementById('Date');
d.innerHTML='当前时间:'+year+'年'+mon+'月'+da+'日'+'星期'+day+' '+h+':'+m+':'+s; },1000) }
3.第一种方法
window.onload = function() {
var show = document.getElementById("show");
setInterval(function() {
var time = new Date(); // 程序计时的月从0开始取值后+1
var m = time.getMonth() + 1;
var t = time.getFullYear() + "-" + m + "-"