Which two values are logged by the following code? var x = 5; (function () { console.log(x); var x = 10; console.log(x); }());

What's the output? function sayHi(person) { 'use strict'; message = 'Hi, ' + person; console.log(message); } person = 'Jim'; sayHi(person);

Object.keys(x)

What's visible in the console after running code: var a = 'Bolt' function f() { if (!a) { var a = 'Nut' } console.log(a); } f(); console.log(a);

var a = isNaN(null); is a true or false?

Evaluate: new Boolean(new Boolean(false)).valueOf()

Which represents when a String object splits a String object into an array of strings by separating the string into substrings?

Evaluate the following expression: ~-(2 + '2')

Which Popup Boxes have support in JavaScript?

Which is used in JavaScript to insert special characters?

How do you create a Date object in JavaScript?