复制代码 代码如下:

var date = function( a, s ) {
    var d = s ? new Date( s ) : new Date(), f = d.getTime();
    return ( \'\' + a ).replace( /a|A|d|D|F|g|G|h|H|i|I|j|l|L|m|M|n|s|S|t|T|U|w|y|Y|z|Z/g, function ( a ) {
        switch ( a ) {
                case \'a\' : return d.getHours() > 11 ? \'pm\' : \'am\';
                case \'A\' : return d.getHours() > 11 ? \'PM\' : \'AM\';
                case \'d\' : return ( \'0\' + d.getDate() ).slice(-2);
                case \'D\' : return [ \'Sun\', \'Mon\', \'Tue\', \'Wed\', \'Thu\', \'Fri\', \'Sat\' ][ d.getDay() ];
                case \'F\' : return [ \'January\', \'February\', \'March\', \'April\', \'May\', \'June\', \'July\', \'August\', \'September\', \'October\', \'November\', \'December\' ][ d.getMonth() ];
                case \'g\' : return ( s = ( d.getHours() || 12 ) ) > 12 ? s - 12 : s;
                case \'G\' : return d.getHours();
                case \'h\' : return ( \'0\' + ( ( s = d.getHours() || 12 ) > 12 ? s - 12 : s ) ).slice(-2);
                case \'H\' : return ( \'0\' + d.getHours() ).slice(-2);
                case \'i\' : return ( \'0\' + d.getMinutes() ).slice(-2);
                case \'I\' : return (function(){ d.setDate(1); d.setMonth(0); s = [ d.getTimezoneOffset() ]; d.setMonth(6); s[1] = d.getTimezoneOffset(); d.setTime( f ); return s[0] == s[1] ? 0 : 1; })();
                case \'j\' : return d.getDate();
                case \'l\' : return [ \'Sunday\', \'Monday\', \'Tuesday\', \'Wednesday\', \'Thursday\', \'Friday\', \'Saturday\' ][ d.getDay() ];
                case \'L\' : return ( s = d.getFullYear() ) % 4 == 0 && ( s % 100 != 0 || s % 400 == 0 ) ? 1 : 0;
                case \'m\' : return ( \'0\' + ( d.getMonth() + 1 ) ).slice(-2);
                case \'M\' : return [ \'Jan\', \'Feb\', \'Mar\', \'Apr\', \'May\', \'Jun\', \'Jul\', \'Aug\', \'Sep\', \'Oct\', \'Nov\', \'Dec\' ][ d.getMonth() ];
                case \'n\' : return d.getMonth() + 1;
                case \'s\' : return ( \'0\' + d.getSeconds() ).slice(-2);
                case \'S\' : return [ \'th\', \'st\', \'nd\', \'rd\' ][ ( s = d.getDate() ) < 4 ? s : 0 ];
                case \'t\' : return (function(){ d.setDate(32); s = 32 - d.getDate(); d.setTime( f ); return s; })();
                case \'T\' : return \'UTC\';
                case \'U\' : return ( \'\' + f ).slice( 0, -3 );
                case \'w\' : return d.getDay();
                case \'y\' : return ( \'\' + d.getFullYear() ).slice(-2);
                case \'Y\' : return d.getFullYear();
                case \'z\' : return (function(){ d.setMonth(0); return d.setTime( f - d.setDate(1) ) / 86400000; })();
                default : return -d.getTimezoneOffset() * 60;
            };
    } );
};