Which of the following is/ are invalid usage(s) for a web worker in JavaScript?

1. Making use of the window shortcut to get the current global scope in a web worker.
2. Trying to access data in DOM directly with a web worker.

What's the output? var test = function test(){ console.log(window.location === document.location); }; test();

What's the output? var a = /xy/i, b = new RegExp(a, 'g'); console.log(a.test('xy')); console.log(b.test('xy')); console.log(a.test('XY')); console.log(b.test('XY'));

What's the output? var x=1; function f(x) { if (x === 0) { return 1; } return x * f(x-1)+2; } console.log(f(8));

What's the output? console.log(null == undefind);

Timer value can be cleared using which functions in JavaScript?

Which can be used to write a JavaScript function that will accept user input?

Given a p element with some text content, which of the following code snippets sets the background color of the text to yellow, its color to red, and its font size to 20px?

Which shortcut can be used for writing multiple document.write statements?

Which will include a JavaScript file in another JavaScript file?

Which is not a valid method for looping an array?