JS時間工具類

    /**


* 時間對象的格式化 
*/  
Date.prototype.format = function(format)  
{  
    /* 
    * format="yyyy-MM-dd hh:mm:ss"; 
    */  
    var o = {  
    "M+" : this.getMonth() + 1,  
    "d+" : this.getDate(),  
    "h+" : this.getHours(),  
    "m+" : this.getMinutes(),  
    "s+" : this.getSeconds(),  
    "q+" : Math.floor((this.getMonth() + 3) / 3),  
    "S" : this.getMilliseconds()  
    }  

    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;  
}  
/** 
 * 獲取給定日期的最大天數 
 * yyyy-MM-dd  
 */  
Date.prototype.maxDay  = function(){  
    var curDate = new Date(this.getFullYear(),this.getMonth(),1);  
    var nextDate = new Date(this.getFullYear(),this.getMonth()+1,1);  
    var days = (nextDate.getTime()-curDate.getTime())/(24*3600*1000);  
    return days;  
}  </pre><br />