javaScript刷新页面

刷新页面有一下几种：

1、直接在页面上： 每两秒刷新页面 

<meta http-equiv="refresh" content="2">

2、每秒刷新页面

setTimeout('myrefresh()',1000);
function myrefresh() {
window.location.reload(); 
} 

3、每整点刷新一次

setInterval("flash()",1000);
     function  flash(){
        var now=new Date();
        var s=now.getSeconds();
        var m=now.getMinutes();
        if(m=="0"&& s=="0"){
            window.location.reload();
        }
    };

4、每两小时刷新一次页面

 setInterval("flash2Hour()", 1000);
    function flash2Hour(){
        var now=new Date();
        var h=now.getHours();
        var m=now.getMinutes();
        var s=now.getSeconds();
        var arr=["0","2","4","6","8","10","12","14","16","18","20","22"];
        for(var i=0;i<arr.length;i++){
            if(h==arr[i]){
                if(m=='0'&& s=='0'){
                    window.location.reload();
                }
            }
        } 
    };