Underscore.js Get key from value in array

Question

Is there a simple way to get key from value?

var arr = [1,2,3,4,10];
if(_.contains(arr, 3))
  alert(KEY of 3 (2))

You can use [array].indexOf

Gabe
– Gabe

2015-03-18 12:55:21 +00:00
Commented Mar 18, 2015 at 12:55 — Gabe
– Gabe, Commented Mar 18, 2015 at 12:55

T.J. Crowder · Accepted Answer · 2015-03-18 12:58:56Z

4

Opens documentation
Looks on left
Finds _.indexOf:

_.indexOf(array, value, [isSorted])

Returns the index at which value can be found in the array, or -1 if value is not present in the array.

answered Mar 18, 2015 at 12:58

T.J. Crowder

1.1m201 gold badges2k silver badges2k bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Sergey Kudryashov Over a year ago

Oh sorry! Of coz it is. Thnx!

Collectives™ on Stack Overflow

Underscore.js Get key from value in array

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related