30-seconds-of-code/javascript/snippets/sample.md

title, type, tags, cover, dateModified

title	type	tags	cover	dateModified
Random element in array	snippet	array string random	paper-card	2020-10-22T20:24:30+03:00

Gets a random element from an array.

• Use Math.random() to generate a random number.
• Multiply it by Array.prototype.length and round it off to the nearest whole number using Math.floor().
• This method also works with strings.

const sample = arr => arr[Math.floor(Math.random() * arr.length)];

sample([3, 7, 9, 11]); // 9