How to Get Random Value from Array in Javascript

Question: How to get random value from array in javascript

Answer: Sometimes we need to fetch a random value from an array, we are sharing three methods with you to extract random value from the array. You can see the live demo, the button is below.

01. Method

Using 'Math.floor()' Function.

const colors = ["Red", "Green", "Black", "Yellow", "Blue", "Orange", "White"];

const random = Math.floor(Math.random() * colors.length);
console.log(random, colors[random]);

Output: Your and our answer may or may not match as it is randomly generated

6
"White"
1
"Green"

02. Method

Using 'Array.prototype' concept.

const colors = ["Red", "Green", "Black", "Yellow", "Blue", "Orange", "White"];

Array.prototype.randomValue = function(){
  return this[Math.floor(Math.random()*this.length)];
}

console.log(colors.randomValue());

Output: Your and our answer may or may not match as it is randomly generated.

"Red"
"White"

03. Method

Using 'find()' function.

const colors = ["Red", "Green", "Black", "Yellow", "Blue", "Orange", "White"];

var randomValue = colors.find((_, i, colors) => Math.random() < 1 / (colors.length - i));
console.log(randomValue);

Output: Your and our answer may or may not match as it is randomly generated

"Green"
"Blue"

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