JavaScript 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; 
        }

}


//how to use
new Date().format('yyyy-MM-dd hh:mm:ss');
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