http://gwbasic.javaeye.com/blog/36904
/* 将String类型解析为Date类型. parseDate('2006-1-1') return new Date(2006,0,1) parseDate(' 2006-1-1 ') return new Date(2006,0,1) parseDate('2006-1-1 15:14:16') return new Date(2006,0,1,15,14,16) parseDate(' 2006-1-1 15:14:16 ') return new Date(2006,0,1,15,14,16); parseDate('2006-1-1 15:14:16.254') return new Date(2006,0,1,15,14,16,254) parseDate(' 2006-1-1 15:14:16.254 ') return new Date(2006,0,1,15,14,16,254) parseDate('不正确的格式') retrun null */ function parseDate(str){ if(typeof str == 'string'){ var results = str.match(/^ *(/d{4})-(/d{1,2})-(/d{1,2}) *$/); if(results && results.length>3) return new Date(parseInt(results[1]),parseInt(results[2]) -1,parseInt(results[3])); results = str.match(/^ *(/d{4})-(/d{1,2})-(/d{1,2}) +(/d{1,2}):(/d{1,2}):(/d{1,2}) *$/); if(results && results.length>6) return new Date(parseInt(results[1]),parseInt(results[2]) -1,parseInt(results[3]),parseInt(results[4]),parseInt(results[5]),parseInt(results[6])); results = str.match(/^ *(/d{4})-(/d{1,2})-(/d{1,2}) +(/d{1,2}):(/d{1,2}):(/d{1,2})/.(/d{1,9}) *$/); if(results && results.length>7) return new Date(parseInt(results[1]),parseInt(results[2]) -1,parseInt(results[3]),parseInt(results[4]),parseInt(results[5]),parseInt(results[6]),parseInt(results[7])); } return null; } /* 将Date/String类型,解析为String类型. 传入String类型,则先解析为Date类型 不正确的Date,返回 '' 如果时间部分为0,则忽略,只返回日期部分. */ function formatDate(v){ if(typeof v == 'string') v = parseDate(v); if(v instanceof Date){ var y = v.getFullYear(); var m = v.getMonth() + 1; var d = v.getDate(); var h = v.getHours(); var i = v.getMinutes(); var s = v.getSeconds(); var ms = v.getMilliseconds(); if(ms>0) return y + '-' + m + '-' + d + ' ' + h + ':' + i + ':' + s + '.' + ms; if(h>0 || i>0 || s>0) return y + '-' + m + '-' + d + ' ' + h + ':' + i + ':' + s; return y + '-' + m + '-' + d; } return ''; }
老外写的一个javascript下Date格式化函数
http://blog.csdn.net/akunshenjk/archive/2008/06/12/2539638.aspx
Date.prototype.format = function(mask) { var d = this; var zeroize = function (value, length) { if (!length) length = 2; value = String(value); for (var i = 0, zeros = ''; i < (length - value.length); i++) { zeros += '0'; } return zeros + value; }; return mask.replace(/"[^"]*"|'[^']*'|/b(?:d{1,4}|m{1,4}|yy(?:yy)?|([hHMstT])/1?|[lLZ])/b/g, function($0) { switch($0) { case 'd': return d.getDate(); case 'dd': return zeroize(d.getDate()); case 'ddd': return ['Sun','Mon','Tue','Wed','Thr','Fri','Sat'][d.getDay()]; case 'dddd': return ['Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday'][d.getDay()]; case 'M': return d.getMonth() + 1; case 'MM': return zeroize(d.getMonth() + 1); case 'MMM': return ['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'][d.getMonth()]; case 'MMMM': return ['January','February','March','April','May','June','July','August','September','October','November','December'][d.getMonth()]; case 'yy': return String(d.getFullYear()).substr(2); case 'yyyy': return d.getFullYear(); case 'h': return d.getHours() % 12 || 12; case 'hh': return zeroize(d.getHours() % 12 || 12); case 'H': return d.getHours(); case 'HH': return zeroize(d.getHours()); case 'm': return d.getMinutes(); case 'mm': return zeroize(d.getMinutes()); case 's': return d.getSeconds(); case 'ss': return zeroize(d.getSeconds()); case 'l': return zeroize(d.getMilliseconds(), 3); case 'L': var m = d.getMilliseconds(); if (m > 99) m = Math.round(m / 10); return zeroize(m); case 'tt': return d.getHours() < 12 ? 'am' : 'pm'; case 'TT': return d.getHours() < 12 ? 'AM' : 'PM'; case 'Z': return d.toUTCString().match(/[A-Z]+$/); // Return quoted strings with the surrounding quotes removed default: return $0.substr(1, $0.length - 2); } }); };