JS日期格式化

Date. prototype. Format = function ( fmt) {

             var o = {

             "M+" : this. getMonth() + 1, //月份

             "d+" : this. getDate(), //日

             "h+" : this. getHours(), //小时

             "m+" : this. getMinutes(), //分

             "s+" : this. getSeconds(), //秒

             "q+" : Math. floor(( this. getMonth() + 3) / 3), //季度

             "S" : this. getMilliseconds() //毫秒

            };

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

             for ( var k in o)

             if ( new RegExp( "(" + k + ")"). test( fmt)) fmt = fmt. replace( RegExp. $1, ( RegExp. $1. length == 1) ? ( o[ k]) : (( "00" + o[ k]). substr(( "" + o[ k]). length)));

             return fmt;

         }

         var time2 = new Date(). Format( "yyyy-MM-dd hh:mm:ss");

                 console. log( time2);