random array element js 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: how to get a random element of an array javascript

var foodItems = ["Bannana", "Apple", "Orange"];
var theFood = foodItems[Math.floor(Math.random() * foodItems.length)];
/* Will pick a random number from the length of the array and will go to the
corosponding number in the array E.G: 0 = Bannana */

Example 3: javascript how to get a random element from an array

var items = ['Yes', 'No', 'Maybe'];
var item = items[Math.floor(Math.random() * items.length)];

Example 4: random string from array javascript

var textArray = [
    'song1.ogg',
    'song2.ogg'
];
var randomNumber = Math.floor(Math.random()*textArray.length);

Example 5: get random element from array js

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

Example 6: javascript generate random array

//This example is to generate an array with 40 random elements, with random values from 0 to 39 

for (var a=[],i=0;i<40;++i) a[i]=i;

// http://stackoverflow.com/questions/962802#962890
function shuffle(array) {
  var tmp, current, top = array.length;
  if(top) while(--top) {
    current = Math.floor(Math.random() * (top + 1));
    tmp = array[current];
    array[current] = array[top];
    array[top] = tmp;
  }
  return array;
}

a = shuffle(a);