Find the output of the following code:

<script>

var x="Hello World!!!";

x[6]='w';

document.write(x[6]);

</script>

What function can be used to find the last index of a character in a string?

Which of the following properties are associated with the Response event?

What happens if you specify an absolute URL in the Worker constructor?

What is the output of the following code?

<script>

var x = [3, 4, 82, 6];

x.unshift(67);

document.write(x);

</script>

 Which is a more formal way of importing packages and classes as JavaScript objects? 

Which of the following Array object methods applies a function simultaneously against two values of the array (right-to-left) to reduce it to a single value?

Which object defines methods that allow complete control over page content?

 What is the JavaScript code snippet to find all container elements with class “abekus”? 

What is the JavaScript code snippet to find all container elements with the class 'reveal'?