Get Random Colors Stored in Array

HTML code

<button id="btn">

Click me

</button>

JS Code

let colors = ['white', 'blue', 'red', 'green', 'orange'];

let btn = document.getElementById('btn');



btn.addEventListener('click', function(){

let randNum = randomNumber();

console.log(randNum);

document.body.style.backgroundColor=colors[randNum];

});



function randomNumber(){

 return Math.floor(Math.random()*colors.length);

}