我们在项目中一般会遇到显示时间的问题，一般的处理方式是在前台通过JS控制，JS控制显示时间的代码如下，各种不同的显示方式：

function Clock() {
	var date = new Date();
	this.year = date.getFullYear();
	this.month = date.getMonth() + 1;
	this.date = date.getDate();
	this.day = new Array("星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六")[date.getDay()];
	this.hour = date.getHours() < 10 ? "0" + date.getHours() : date.getHours();
	this.minute = date.getMinutes() < 10 ? "0" + date.getMinutes() : date.getMinutes();
	this.second = date.getSeconds() < 10 ? "0" + date.getSeconds() : date.getSeconds();

	this.toString = function() {
		return "现在是:" + this.year + "年" + this.month + "月" + this.date + "日 " + this.hour + ":" + this.minute + ":" + this.second + " " + this.day; 
	};//现在是现在是:2013年3月6日 13:54:17 星期三

	this.toSimpleDate = function() {
		return this.year + "-" + this.month + "-" + this.date;
	};//2013-03-06
	
	this.toDetailDate = function() {
		return this.year + "-" + this.month + "-" + this.date + " " + this.hour + ":" + this.minute + ":" + this.second;
	};//2013-03-06 13:45:43
	
	this.display = function(ele) {
		var clock = new Clock();
		ele.innerHTML = clock.toString();//显示方式调用
		window.setTimeout(function() {clock.display(ele);}, 1000);
	};
}