JavaScript中对日期格式化的新想法.

其实我们对与日期的显示,也就那么几种,不需要每次都传格式化字符串.

只要告诉函数你想要什么结果就好了,以下是在ios的JavaScript中我新写的日期格式化函数:

 /**
     格式化日期
     @param {String} formatStr-格式化字符串
     @description
     "date":显示日期.如:2017/09/09
     "time":显示时间.如:15:09:05
     "minute":显示到分钟.如:2017/09/09 15:09
     "second"显示到秒.如:2017/09/09 15:09:05
     @return {String} 格式化后的日期
 */
 Date.prototype.format = function(formStr) {
     var date = this;
     var year,month,day,hour,minute,second;
     var dateStr,minuteStr,secondStr;

     year=date.getFullYear(); month=date.getMonth()+1; day=date.getDate();

     dateStr=year+"/"+(month<10?"0"+month:month)+"/"+(day<10?"0"+day:day);
     if(formStr=="date") return dateStr;

     hour=date.getHours(); minute=date.getMinutes(); second=date.getSeconds();

     minuteStr=(hour<10?"0"+hour:hour)+":"+(minute<10?"0"+minute:minute);
     secondStr=minuteStr+":"+(second<10?"0"+second:second);
     if(formStr=="time") return secondStr;

     if(formStr=="minute") return dateStr+" "+minuteStr;

     if(formStr=="second") return dateStr+" "+secondStr;
 };

很low很实在.