How to sort array by date

Question

Here is my array

arr=[
{
    date:'2017-06-14 14:03:49'
},
{
    date:'2017-04-20 10:25:32'
},
{
    date:'2017-06-02 15:57:16'
},
{
    date:'2017-06-02 17:52:05'
},
{
    date:'2017-06-02 21:47:13'
},
{
    date:'2017-06-14 14:01:31'
}
]

I need sort an array by date.

How can i do this,

Kindly advice me,

Thanks

Dunno if that's an exact duplicate. In this case, since the date strings are ISO 8601, the compare function can be simply return a.localCompare(b), so no need to covert to Date at all. — RobG
– RobG, Commented Jun 16, 2017 at 6:26

Pranav C Balan · Accepted Answer · 2017-06-16 06:36:18Z

10

Use Array#sort method and within compare function parse the string and return value corresponding by getting the difference.

var arr = [{
  date: '2017-06-14 14:03:49'
}, {
  date: '2017-04-20 10:25:32'
}, {
  date: '2017-06-02 15:57:16'
}, {
  date: '2017-06-02 17:52:05'
}, {
  date: '2017-06-02 21:47:13'
}, {
  date: '2017-06-14 14:01:31'
}];

arr.sort(function(a, b) {
  // convert date object into number to resolve issue in typescript
  return  +new Date(a.date) - +new Date(b.date);
})

console.log(arr);

Refer the issue in git: Error when doing arithmetic operations on date

Or refer : TypeScript sort by date not working

edited Jun 16, 2017 at 6:36

answered Jun 16, 2017 at 6:21

Pranav C Balan

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3 Comments

ANISUNDAR Over a year ago

@Pranav C Balan Thanks for ur reply.Actually i am using typescript.I am get this err left hand side an arithmetic operation must be of type any.Kindly advice me

Pranav C Balan Over a year ago

@ANISUNDAR : updated the answer, you need to convert it to number since it's date object.... it can be done by adding + before the parse date

Jeff Beagley Over a year ago

This also works when sorting SQL smalldatetime ie, 2018-07-05T20:24:00.000Z

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