How to get first N elements of an array in JavaScript

In this tutorial, you will learn two ways to get the first N elements of an array in JavaScript

1.Using Array.slice

The Array.slice method returns elements of an array into a new array. It accepts two arguments; start and end

Pass the 0 as the first argument and n as the last argument to get the first n elements of an array.

const array = ['get', 'first', 'n', 'elements', 'of', 'an', 'array'];

array.slice(0, 3); // ['get','first', 'n']

// get first 10 elements of an array in JavaScript

array.slice(0, 10);
// ['get', 'first', 'n', 'elements', 'of', 'an', 'array'];

array.slice(0,1); // ['get']

2. Using Array.filter

The Array.filter method can also be used to get the first n elements of an array into a new array.

Check if element’s index is less than N inside the callback function

const array = ['get', 'first', 'n', 'elements', 'of', 'an', 'array'];

const n = 3;

array.filter((a, index)=> index<3);
// ['get', 'first', 'n']

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