如何使用JavaScript更改日期格式

Question

Apologies if duplicate

I have a date in Mon May 29 2017 12:36:49 GMT+0000 and I want to convert it into 2017-05-01T19:04:18Z How can i do that using JavaScript.

Here is my code

var targetDate = new Date();
 targetDate.setDate(targetDate.getDate() - 5);
 console.log("targetDate is "+targetDate); 

I am getting output like targetDate is Mon May 29 2017 12:36:49 GMT+0000 but I want it in 2017-05-01T19:04:18Z format

Any help appreciated, Thanks in advance

Answer 1

This is not the best practice, but still putting it here for your reference:

Date.prototype.toString = function() {
    return `${this.getFullYear()}-${this.getMonth() + 1}-${this.getDate()}T${this.getHours()}:${this.getMinutes()}:${this.getSeconds()}`;
}

d = new Date()
2017-6-3T18:39:34

Answer 2

function addZero(i) {
    if (i < 10) {
        i = "0" + i;
    }
    return i;
}

var targetDate = new Date(); 
targetDate.setDate(targetDate.getDate() - 5);
var newTime = targetDate.getFullYear()+"-"+addZero(targetDate.getMonth())+"-"+addZero(targetDate.getDate())+" "+addZero(targetDate.getHours())+":"+addZero(targetDate.getMinutes())+":"+addZero(targetDate.getSeconds());
alert(newTime);

Answer 3

Are you looking for JSON encoded date?

You can parse that with the JSON serializer:

console.log("targetDate is "+ JSON.stringify(targetDate));