Code to get last 2 items from an array

Question

Am trying to get last 2 items from an array

result.forEach(function (re) {

console.log(re.files)
// prints ["utilities.rb", "print_utilities.rb", "lities.rb", "agination.rb"]
});

i only want to last two elements in the array in the order

 [ "agination.rb", "print_utilities.rb"]

How it is possible

possible duplicate of [slice array from N to last element](http://stackoverflow.com/questions/14395050/slice-array-from-n-to-last-element) — Jorge Y. C. Rodriguez, Apr 23 '14 at 08:08

thomaux · Answer 1 · 2014-04-23T08:16:37.770

5

Use the Array.prototype.slice method for this with a negative index.

From MDN:

As a negative index, begin indicates an offset from the end of the sequence. slice(-2) extracts the last two elements in the sequence.

slice returns a new array, so you can store the result in a new variable.

So in your case, simply use:

var arrayWithLast2Items = re.files.slice(-2);

edited Apr 23 '14 at 08:16

answered Apr 23 '14 at 08:09

thomaux

19,133
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how to acccend that array – Sush Apr 23 '14 at 08:13

score 0 · Answer 2 · answered Apr 23 '14 at 08:10

0

jquery provides a slice method for this

e.g

$([1,2,3]).slice(-2)

https://api.jquery.com/slice/

answered Apr 23 '14 at 08:10

io2

131
3

1

why load jQuery for a normal function in vanilla javascript? – Jorge Y. C. Rodriguez Apr 23 '14 at 08:10

score -1 · Answer 3 · answered Apr 23 '14 at 08:08

-1

Have a temp array with size 2, iterate the elements of original array and over write/copy elements to the temp array. Once iteration is complete, the temp array will contain last 2 elements of original array.

answered Apr 23 '14 at 08:08

Vinod Jayachandran

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Code to get last 2 items from an array

3 Answers3