what is happening in var newRgb = 'rgb(' + arr[0] + ',' + arr[1] + ',' + arr[2] + ')'; please help me to understand this.

Question

function changeColor(){
var newColor = makeColor();
var box = document.getElementById('box').style.backgroundColor = newColor;
document.getElementById('rgb').innerHTML = newColor;
}

function makeColor(){
var arr = [];
for(var i = 0; i < 3; i++){
var num = Math.floor(Math.random() * 256);
arr.push(num);
}
var newRgb = 'rgb(' + arr[0] + ',' + arr[1] + ',' + arr[2] + ')';
return newRgb;
}

Answer 1

this creates a random RGB color by making an array with 3 random values that can represent a color