index.js

var randomNumber1 = Math.floor(Math.random() * 6) + 1; //1-6

var randomDiceImage = "dice" + randomNumber1 + ".png"; //dice1.png - dice6.png

var randomImageSource = "images/" + randomDiceImage; //images/dice1.png - images/dice6.png

var image1 = document.querySelectorAll("img")[0];

image1.setAttribute("src", randomImageSource);

var randomNumber2 = Math.floor(Math.random()*6)+1;

var randomDiceImage2 = "dice" + randomNumber2 + ".png";

var randomImageSource2 = "images/" + randomDiceImage2;

var image2 = document.querySelectorAll("img")[1];

image2.setAttribute("src", randomImageSource2);

if(randomNumber1 > randomNumber2)
  document.querySelector("h1").innerHTML = "Player1 wins";
else if (randomNumber2>randomNumber1)
  document.querySelector("h1").innerHTML = "Player2 wins";
else
  document.querySelector("h1").innerHTML= "Match Draws";