<!DOCTYPE html>
<html>
<body>
<p>Deleting elements leaves undefined holes in an array.</p>
<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
var fruits = ["Banana", "Orange", "Apple", "Mango"];
document.getElementById("demo").innerHTML = fruits;
function myFunction() {
delete fruits[0];
document.getElementById("demo").innerHTML = fruits[0];
}
</script>
</body>
</html>