JavaScript - fill array with default values (ES6+)

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In this article, we would like to show you how to fill array with default values in JavaScript (ES6+).

Quick solution:

// ONLINE-RUNNER:browser;

let array = Array(3).fill(0);
console.log(array); // 0,0,0


Practical example

In this example, we create an array with size 5 and use fill() method to fill all its elements with 1 as default value.

// ONLINE-RUNNER:browser;

let array = Array(5).fill(1);
console.log(array); // 1,1,1,1,1


Alternative titles

  1. JavaScript - fill whole array with specified value (ES6+)
  2. JavaScript - create zero filled array
  3. JavaScript - create array with the same element repeated multiple times
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