js random in array code example

Example 1: javascript get random array value

//get random value from array
var colors = ["red","blue","green","yellow"];
var randColor = colors[Math.floor(Math.random() * colors.length)];

Example 2: pick a random element from an array javascript

var myArray = [
  "Apples",
  "Bananas",
  "Pears"
];

var randomItem = myArray[Math.floor(Math.random()*myArray.length)];

Example 3: get random element from array js

var item = items[Math.floor(Math.random() * items.length)];

Example 4: javascript random sort array

// O(n)
function shuffleArray(array) {
    for (let i = array.length - 1; i > 0; i--) {
        const j = Math.floor(Math.random() * (i + 1));
        [array[i], array[j]] = [array[j], array[i]];
    }
}