factor_za factor_za - 1 year ago 83
Javascript Question

Generate a random number 4 times no repeating Javascript?

I am wanting to generate a random number between 1-100, but I am only wanting to generate those numbers once each time. I have a loop that runs 3 times to run the .Math and then push that into an array. But I dont want the situation where it generates the same number more than once.

I have put 21 in the allAnswers[] array as that is something that will stay consistent. Is there a way to generate and then check that array if that number exists and then run the .math again?

function buttonGenerator(){
var allAnswers = [21],
randomizer = [];

// Generates 3 random answers
for(a = 0 ; a < 3; a++) {
wrongAnswers = Math.floor((Math.random() * 100) + 1);

// Generates random buttons while inputting the correct and incorrect answers randomly
for(i = 0 ; i < 4; i++) {
var buttonArea = $("#answerOptions");
input = $('<button class="col-xs-6 btn btn-primary"></button>');



Answer Source

Use indexOf to check if the array has the value before pushing:

if (allAnswers.indexOf(wrongAnswers) === -1) {
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