Angular pick first 3 arrays from array

Question

I have list of arrays in an array. I need to pick first 3.

For example i have this :

[{[1]},{[2]},{[3]},{[4]}]

Sorry i know it's not a proper array i am attaching my console

This is my arrays look like and i need to pick just first 3 . And also can i restructure my array like this in one array ?

[{1},{2},{3}]

The console shows an array of objects, not an array of arrays — ShamPooSham, Feb 12 '20 at 08:03
Maybe it will help you: https://stackoverflow.com/q/33679850/11498076 — Miri Gold, Feb 12 '20 at 08:31

score 2 · Answer 1 · edited Feb 12 '20 at 10:13

2

You can either use slice

array.slice(0, 3);

if you want to modify the original array use,

arr.length = 3;

Demo :

var arr = [1, 2, 3, 4];

var newArr = arr.slice(0,3);

console.log(newArr);

edited Feb 12 '20 at 10:13

Debug Diva

answered Feb 12 '20 at 07:58

Sajeetharan

score 1 · Answer 2 · answered Feb 12 '20 at 08:03

1

A good function is to use the slice function from array. An example looks like this:

  var fruits = ["Banana", "Orange", "Lemon", "Apple", "Mango"];
  var citrus = fruits.slice(0, 3);

The result will be citrus = Banana,Orange,Lemon

answered Feb 12 '20 at 08:03

Mark Holst

score 0 · Answer 3 · answered Feb 12 '20 at 10:34

If you want to change the original array use splice(); e.g.

    let array=['1','2','3','4','5'];
array.splice(3);
 array; // 1,2,3;

But if you want that changes should not reflect original array use slice() method.

    let array=['1','2','3','4','5'];
let finalArray=array.slice(0,3);
 array; // 1,2,3,4,5;
finalArray; // 1,2,3;

3 Answers3