Choose correct answer for the following statement: 'If you delete an object prototype property, it will..........'

What is the use of isNaN function

What does Object.keys(x) return given the following x object. var x = { 'a': 1, 'b': 2 };

Choose from the following which is true about Javascript

Which is NOT a JavaScript Type?

Meaning of IIFE in Javascript ?

Which declaration is not valid?

What does the following JavaScript code do?

Which are true regarding 'window.onload' and ''?

Which code snippet is more efficient, and why?

Analyze the following code snippet. What's the output?