JS 日期格式化

Date.prototype.format = function(format) {
var o = {
"M+" : this.getMonth() + 1, //month 
"d+" : this.getDate(), //day 
"h+" : this.getHours(), //hour 
"m+" : this.getMinutes(), //minute 
"s+" : this.getSeconds(), //second 
"q+" : Math.floor((this.getMonth() + 3) / 3), //quarter 
"S" : this.getMilliseconds()
//millisecond 
};


if (/(y+)/.test(format)) {
format = format.replace(RegExp.$1, (this.getFullYear() + "")
.substr(4 - RegExp.$1.length));
}


for ( var k in o) {
if (new RegExp("(" + k + ")").test(format)) {
format = format.replace(RegExp.$1, RegExp.$1.length == 1 ? o[k]
: ("00" + o[k]).substr(("" + o[k]).length));
}
}
return format;
};


var time_value = '';//间隔
var now = new Date();
var nowStr = now.format("yyyy-MM-dd hh:mm:ss"); //获取当前时间
var this_date = nowStr.split(' ')[0]; //获取当前日期
var ten_flag = new Date(this_date + " 10:00:00");//当前10点
if (now.getTime() > ten_flag.getTime()) {
alert("时间过了");
return;
} else {
time_value = ten_flag.getTime() - now.getTime();
alert(time_value + '毫秒后进行跳转');
return;
}
setInterval("doJump()", time_value); //启动time_value毫秒定时 
function doJump() {
window.location.href = "http://www.google.com/"; //
}