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date formater
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/** | |
* 对日期进行格式化, | |
* @from http://yaniswang.com/frontend/2013/02/16/dateformat-performance/ | |
* @param date 要格式化的日期 | |
* @param format 进行格式化的模式字符串 | |
* 支持的模式字母有: | |
* y:年, | |
* M:年中的月份(1-12), | |
* d:月份中的天(1-31), | |
* h:小时(0-23), | |
* m:分(0-59), | |
* s:秒(0-59), | |
* S:毫秒(0-999), | |
* q:季度(1-4) | |
* @return String | |
* @author yanis.wang@gmail.com | |
*/ | |
function dateFormat(date, format) { | |
if(format === undefined){ | |
format = date; | |
date = new Date(); | |
} | |
var map = { | |
"M": date.getMonth() + 1, //月份 | |
"d": date.getDate(), //日 | |
"h": date.getHours(), //小时 | |
"m": date.getMinutes(), //分 | |
"s": date.getSeconds(), //秒 | |
"q": Math.floor((date.getMonth() + 3) / 3), //季度 | |
"S": date.getMilliseconds() //毫秒 | |
}; | |
format = format.replace(/([yMdhmsqS])+/g, function(all, t){ | |
var v = map[t]; | |
if(v !== undefined){ | |
if(all.length > 1){ | |
v = '0' + v; | |
v = v.substr(v.length-2); | |
} | |
return v; | |
} | |
else if(t === 'y'){ | |
return (date.getFullYear() + '').substr(4 - all.length); | |
} | |
return all; | |
}); | |
return format; | |
} |
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