<!DOCTYPE html>
<html>
<body>

<p>An unordered list:</p>
<ul>
  <li class="mm">Coffee</li>
  <li class="mm">Tea</li>
  <li class="mm">Milk</li>
</ul>

<p>Click the button to display the innerHTML of the second li element (index 1).</p>

<button onclick="myFunction()">Try it</button> <br>
<button onclick="fun2()"> Change colors </button>

<p id="demo"></p>

<script>
function myFunction() {
  var x = document.getElementsByTagName("LI");
  document.getElementById("demo").innerHTML = x[1].innerHTML;
}
function fun2() {
var list = document.getElementsByClassName("mm");
list[0].style.color = "green";
list[1].style.color="red";
list[2].style.color="cyan";
}
</script>

</body>
</html>