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.