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The JavaScript Interview Handbook: 100+ Interview Questions

Go through your front-end interviews with confidence and land a high-paying job.

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Ace the Front-end Interview

Go through your front-end interviews with confidence and land a high-paying job.

5 Modules

Course Overview

Preparing for coding interviews can be a long, arduous process. Many developers will tell you they spend countless hours grinding through hundreds of coding questions in order to feel confident. This course will help simplify the grind by showing you what topics to spend your time on a...

How You'll Learn

Hands-on coding environments

You don’t get better at swimming by watching others. Coding is no different. Practice as you learn with live code environments inside your browser.

Faster than videos

Videos are holding you back. The average video tutorial is spoken at 150 words per minute, while you can read at 250. That‘s why our courses are text-based.

No set-up required

Start learning immediately instead of fiddling with SDKs and IDEs. It‘s all on the cloud.

Progress you can show

Built in assessments let you test your skills. Completion certificates let you show them off.

Hands-on coding environments

You don’t get better at swimming by watching others. Coding is no different. Practice as you learn with live code environments inside your browser.

Faster than videos

Videos are holding you back. The average video tutorial is spoken at 150 words per minute, while you can read at 250. That‘s why our courses are text-based.

No set-up required

Start learning immediately instead of fiddling with SDKs and IDEs. It‘s all on the cloud.

Progress you can show

Built in assessments let you test your skills. Completion certificates let you show them off.

Course Contents

1. Introduction

About This Course

Evaluate Yourself

2. Language Basics

Solution Review: Hoisting

Challenge: Create an Amount

Solution Review: Create an Amount

Challenge: Check Parentheses

Solution Review: Check Parentheses

Quiz 1: Arrow Functions

Solution Review: Arrow Functions

Quiz 2: Arrow Functions

Solution Review: Arrow Functions

Challenge: Where to Insert

Solution Review: Where to Insert

Quiz: Call, Apply, Bind

Solution Review: Call, Apply, Bind

Quiz 1: Closure

Solution Review: Closure

JavaScript Execution: Call Stack & Event Loop

Immediately Invoked Function Expressions (IIFE)

Quiz: Closure, `setTimeout`, Scopes

Solution Review: Closure, `setTimeout`, Scopes

Quiz: Closure, `setTimeout`, IIFE

Solution Review: Closure, `setTimeout`, IIFE

Challenge: Create Phone Number

Solution Review: Create Phone Number

Challenge: Insert Elements

Solution Review: Insert Elements

Challenge: Bind Function

Solution Review: Bind Function

Quiz: Rest & Spread Syntax

Solution Review: Rest & Spread Syntax

Challenge: Destructuring

Solution Review: Destructuring

Challenge: Array Destructuring

Solution Review: Array Destructuring

Challenge: Return the Cat

Solution Review: Return the Cat

Challenge: Destructure Undefined

Solution Review: Destructure Undefined

3. Type coercion

4. Event Handling

Quiz: Call Stack & Event Loop

Solution Review: Call Stack & Event Loop

Quiz: Event Bubbling

Solution Review: Event Bubbling

Quiz: Event Capturing

Solution Review: Event Capturing

Quiz: Event Delegation

Solution Review: Event Delegation

5. Asynchronous Callbacks

Challenge: Callback Functions

Solution Review: Callback Functions

Challenge: Check the Names

Solution Review: Check the Names

Challenge: Asynchronous Callback Functions

Solution Review: Asynchronous Callback Functions

Quiz 1: Promises

Solution Review: Promises

Challenge: Even or Odd?

Solution Review: Even or Odd?

Quiz 2: Promises

Solution Review: Promises

Challenge: Print Numbers Sequentially

Solution Review: Print Numbers Sequentially

Quiz: Async & Await

Solution Review: Async & Await

6. OOP in JavaScript

7. Functional Programming

8. Security

Quiz: Same Origin Policy

Solution Review: Same Origin Policy

Quiz: "strict" Mode

Solution Review: "strict" Mode

Challenge: Catch the Error

Solution Review: Catch the Error

9. DOM and Web Browser

Solution Review: DOM

Solution Review: DOM

Challenge: Hide & Show

Solution Review: Hide & Show

Challenge: Get Elements Using Attributes

Solution Review: Get Elements Using Attributes

Challenge: Add a Class

Solution Review: Add a Class

Challenge: Destroy the Button

Solution Review: Destroy the Button

Challenge: Is a Child?

Solution Review: Is a Child?

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