Sort array based on value JavaScript

Question

Let's say I have an object of this type and I want to sort the figsList array in that object based on createdAt property (latest first). How can I achieve this in JavaScript?

I want to perform this operation in my NodeJS backend.

{
  id,
  name,
  figsList[
    {
      ...
      createdAt: DateTime
      ...
    },
    {
      ...
      createdAt: DateTime
      ...
    },
    {
      ...
      createdAt: DateTime
      ...
    },
  ]
}

Stefan Popovski · Accepted Answer · 2020-04-11 19:57:34Z

3

You can simply use .sort() method. .sort() takes a callback function, which takes as parameters 2 objects contained in the array. In your case you can try with:

figsList.sort((a, b) => (a.createdAt > b.createdAt) ? 1 : -1)

When we return a positive value, the function communicates to sort() that the object b takes precedence in sorting over the object a. Returning a negative value will do the opposite.

edited Apr 11, 2020 at 19:57

answered Apr 11, 2020 at 19:52

Stefan Popovski

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3 Comments

The Lost JavaScripter Over a year ago

Thank you very much. This worked but with a little change. .sort((a, b) => (b.createdAt > a.createdAt) ? 1 : -1) as I wanted the latest created one at top.

Stefan Popovski Over a year ago

Yes, my answer will sort the array ascending.

The Lost JavaScripter Over a year ago

yes, even changing 1 : -1 to -1 : 1 sorted it to descending. It worked.

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