30-seconds-of-code/snippets/initializeArrayWithValues.md

title, tags, expertise, cover, firstSeen, lastUpdated

title	tags	expertise	cover	firstSeen	lastUpdated
Initialize array with values	array	intermediate	blog_images/flower-portrait-1.jpg	2017-12-17T17:55:51+02:00	2020-10-20T23:02:01+03:00

Initializes and fills an array with the specified values.

• Use Array.from() to create an array of the desired length, Array.prototype.fill() to fill it with the desired values.
• Omit the last argument, val, to use a default value of 0.

const initializeArrayWithValues = (n, val = 0) =>
  Array.from({ length: n }).fill(val);

initializeArrayWithValues(5, 2); // [2, 2, 2, 2, 2]