sorting date with time in descending order in javascript

Question

I have dynamic date and time being generated and I need to sort them in descending order using JavaScript.

my data is in the below format.

var array= ["25-Jul-2017 12:46:39 pm","25-Jul-2017 12:52:23 pm","25-Jul-2017 12:47:18 pm"];

Anyone help would be appreciated.

array.sort((a,b) => new Date(b).getTime() - new Date(a).getTime()) — Rajesh Dixit
– Rajesh Dixit, Commented Jul 25, 2017 at 6:56
Do you mean -? We can use ternary operator with a > b ? 1 : a < b : -1 : 0 — Rajesh Dixit
– Rajesh Dixit, Commented Jul 25, 2017 at 7:00

Milan Chheda · Accepted Answer · 2017-07-25 06:57:55Z

4

Here is the working code for you:

var array = ["25-Jul-2017 12:46:39 pm", "25-Jul-2017 12:52:23 pm", "25-Jul-2017 12:47:18 pm", "25-Jul-2017 12:59:18 pm"];

array.sort((a, b) => new Date(b).getTime() - new Date(a).getTime())

console.log(array)

answered Jul 25, 2017 at 6:57

Milan Chheda

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5 Comments

Jaromanda X Over a year ago

that wont work in firefox - you're a chrome user, right?

Milan Chheda Over a year ago

Oh, didn't knew that. Yes, I did that in chrome.

Milan Chheda Over a year ago

Whoops. Yes @Rajesh. I think, while I was coding in the code-editor, you had already commented. Its a common sorting code.

Milan Chheda Over a year ago

@JaromandaX - Do you have know how we can make it work across browsers? what's the fix?

Jaromanda X Over a year ago

use a library like moment.js

Milan Chheda · Accepted Answer · 2017-07-25 07:00:59Z

0

var array = ["25-Jul-2017 12:46:39 pm", "25-Jul-2017 12:52:23 pm", "25-Jul-2017 12:47:18 pm"];

array.sort(function(a, b) {
  return new Date(b) - new Date(a);
});

console.log(array);

edited Jul 25, 2017 at 7:00

Milan Chheda

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answered Jul 25, 2017 at 6:59

Ryan Tsui

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3 Comments

Rajesh Dixit Over a year ago

First its missing explanation. Second, please check other answer. Its already covered

Milan Chheda Over a year ago

Agree with @Rajesh. It's covered. Secondly, start using code editor so that people can see the output. And lastly, yes, you need to add some explanation about your answer.

Rajesh Dixit Over a year ago

Adding to @MilanChheda comment, <> icon is used to launch code editor. You can put your CSS/HTML/JS code and make it executable. This helps people to verify you code.

Durga · Accepted Answer · 2017-07-25 07:16:32Z

0

DEMO

var array= ["25-Jul-2017 12:46:39 pm","25-Jul-2017 12:52:23 pm","25-Jul-2017 12:47:18 pm"];
var dateAr = [];

for(var i=0;i<array.length;i++){
 dateAr.push(new Date(array[i].replace(/-/g,'/')).getTime()); //convert to milisecond
}


var sortAr = dateAr.sort(function (a, b) {  return a - b;  }); //sort it

var resArr = [];
for(var i=0;i<array.length;i++){
 resArr.push(new Date(sortAr[i])); //make date object
}
console.log(resArr);

Convert to millisecond from Date , and then sort it. and make Date object from millisecond. use this replace(/-/g,'/') to replace date string, it works in all browser.

edited Jul 25, 2017 at 7:16

answered Jul 25, 2017 at 7:06

Durga

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