JS方法篇：获取指定日期的时间差

js计算：从指定日期到今天的具体时间。
例如计算2008-09-07 12:56:48 到今天的具体时间

time:function(){
	var startTime = this.times;
	var s1 = new Date(startTime.replace(/-/g, "/")),
	s2 = new Date(),
	runTime = parseInt((s2.getTime() - s1.getTime()) / 1000);
	var year = Math.floor(runTime / 86400 / 365);
	runTime = runTime % (86400 * 365);
	var month = Math.floor(runTime / 86400 / 30);
	runTime = runTime % (86400 * 30);
	var day = Math.floor(runTime / 86400);
	runTime = runTime % 86400;
	var hour = Math.floor(runTime / 3600);
	runTime = runTime % 3600;
	var minute = Math.floor(runTime / 60);
	runTime = runTime % 60;
	var second = runTime;
	return year + "年" + month + "月" + day + "天" + hour + "分" + minute + "秒"
}