JS date format conversion method

Hello everyone , I meet you again , I'm your friend, Quan Jun .

1. Convert the date to the specified format ： Like converting to Mm / DD / yyyy HHM / S This format ：yyyy-MM-dd hh:mm:ss perhaps yyyy-MM-dd. Of course, online methods , Just to sum up .

It can be for Date The prototype adds the following methods ：

Date.prototype.format = function(fmt) { 
     var o = { 
        "M+" : this.getMonth()+1,                 // month  
        "d+" : this.getDate(),                    // Japan  
        "h+" : this.getHours(),                   // Hours  
        "m+" : this.getMinutes(),                 // branch  
        "s+" : this.getSeconds(),                 // second  
        "q+" : Math.floor((this.getMonth()+3)/3), // quarter  
        "S"  : this.getMilliseconds()             // millisecond  
    }; 
    if(/(y+)/.test(fmt)) {
            fmt=fmt.replace(RegExp.$1, (this.getFullYear()+"").substr(4 - RegExp.$1.length)); 
    }
     for(var k in o) {
        if(new RegExp("("+ k +")").test(fmt)){
             fmt = fmt.replace(RegExp.$1, (RegExp.$1.length==1) ? (o[k]) : (("00"+ o[k]).substr((""+ o[k]).length)));
         }
     }
    return fmt; 
}       

Copy

For example, we can call ：

var time1 = new Date().format(“yyyy-MM-dd hh:mm:ss”); console.log(time1);

Run the following ：

It can also be converted into ” Specific date ” The format of

var time2 = new Date().format(“yyyy-MM-dd”); console.log(time2);

Run the following ：

2. Convert the specified date to ” Specific date ” The format of , The code is as follows ：

var oldTime = (new Date(“2012/12/25 20:11:11”)).getTime(); var curTime = new Date(oldTime).format(“yyyy-MM-dd”); console.log(curTime);

Run the following ：

3. take “ Time stamp ” Convert to “ Specific date ” The format of .

For example, the following code ：

var da = 1402233166999; da = new Date(da); var year = da.getFullYear()+’ year ’; var month = da.getMonth()+1+’ month ’; var date = da.getDate()+’ Japan ’; console.log([year,month,date].join(‘-‘));

Run the following ：

Publisher ： Full stack programmer stack length , Reprint please indicate the source ：https://javaforall.cn/131628.html Link to the original text ：https://javaforall.cn