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The JavaScript Interview Handbook: 100+ Interview Questions (Educative)


Language Basics - Challenge: Bind Function This challenge will test your understanding of rest parameters and their use in implementing the "bind" function in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/qV0q64Z63Bk). Language Basics - Solution Review: Rest & Spread Syntax In this lesson, we will discuss the solutions to the questions in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/R8E05wlO0OK). OOP in JavaScript - Challenge: ES6 Classes This challenge will test your skills in implementing classes in the ES6 version of JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/3jODpy75xgn). Language Basics - Challenge: Destructuring This challenge will test your skills in implementing object destructuring in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/g79O9xBX0Jl). Language Basics - Challenge: Return the Cat This is an advanced level challenge to test your skills in implementing array and object destructuring in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/gxMPgmVo1or). Language Basics - Solution Review: Return the Cat This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/RMJEkV276ME). Language Basics - Challenge: Destructure Undefined This challenge will require you to destructure "undefined" in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/qAMPGPygvNk). Language Basics - Solution Review: Destructure Undefined This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/mEDVpl6W5O3). Type coercion - Challenge: Validate the Date This challenge will test your skills in implementing arrow functions and "prototype.toString" in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/xlqL1NlQrmJ). Asynchronous Callbacks - Solution Review: Check the Names This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/qVxXRvNrAPG). Type coercion - Challenge: Validate Arguments This challenge will test your skills in implementing "typeof" operator in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/YQkwVow4ZGW). Type coercion - Solution Review: Validate Arguments This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/m262vAvrYzA). Type coercion - Solution Review: "instanceof" Operator In this lesson, we will discuss the solutions to the questions in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/xV8Lq0qgQpP). Type coercion - Quiz 2: "instanceof" Operator This lesson will test your understanding of the "instanceof" operator and prototype property in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/JQ5y73qJK7g). Type coercion - Solution Review: Check Instance of Variables This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/q21GDLxN3rp). Type coercion - Solution Review: Array or Not? This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/qA6YOWxAjWr). Language Basics - Solution Review: Call, Apply, Bind In this lesson, we will discuss the solutions to the questions in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/3wADqln0xxA). Language Basics - Solution Review: Array Destructuring This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/3jx4GlkyMxA). Asynchronous Callbacks - Quiz: Async & Await This lesson will test your understanding of promises and async/await in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/B6YRGyp68AQ). OOP in JavaScript - Solution Review: ES6 Classes This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/gkWDzY11WPG). OOP in JavaScript - Quiz: Inheritance This lesson will test your basic understanding of classical and prototypal inheritance in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/qVOYjpgWKrR). OOP in JavaScript - Challenge: Counting Animals This challenge will test you on implementing the "static" keyword in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/JEM3711v7gD). Type coercion - Solution Review: "typeof" Operator In this lesson, we will discuss the solutions to the questions in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/gkryMLpPj1j). Type coercion - Solution Review: Inheritance Check This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/YQDj2qxwwQW). Event Handling - Quiz: Call Stack & Event Loop This lesson will test your understanding of event loop, event queue, and call stack in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/3w0ZWW4Z1QR). Event Handling - Solution Review: Call Stack & Event Loop In this lesson, we will discuss the solutions to the questions in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/3w00W8p3LV4). Event Handling - Quiz: Event Bubbling This lesson will test your understanding of event bubbling in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/Y5YDmq0r4EW). Event Handling - Solution Review: Event Bubbling In this lesson, we will discuss the solution to the quiz in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/R1ygDkx59zz). Event Handling - Quiz: Event Capturing This lesson will test your understanding of event capturing in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/xlqYGpvBqXP). Event Handling - Solution Review: Event Capturing In this lesson, we will discuss the solution to the quiz in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/gkrvzXQkxrD). Event Handling - Quiz: Event Delegation This lesson will test your understanding of event delegation in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/q2RX4Zg2qm2). Asynchronous Callbacks - Challenge: Check the Names This challenge will test your skills in using callback functions to implement error checks in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/gx2PREnERkY). Asynchronous Callbacks - Solution Review: Asynchronous Callback Functions This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/xlqOwkv64Xr). Asynchronous Callbacks - Solution Review: Promises In this lesson, we will discuss the solutions to the questions in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/mED52zWXNJE). Asynchronous Callbacks - Solution Review: Even or Odd? This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/xo8x5RqOnl3). Asynchronous Callbacks - Solution Review: Print Numbers Sequentially This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/RLEqPqr9x5w). Language Basics - Quiz 1: Closure This lesson will test your basic understanding of closures in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/myjKlQQDPNE). Language Basics - Solution Review: Closure, `setTimeout`, IIFE In this lesson, we will discuss the solution to the quiz in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/JPJO6rXE67l). Language Basics - Solution Review: Insert Elements This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/YMV3ZAkE3v0). Language Basics - Challenge: Array Destructuring This challenge will test your skills in implementing basic array destructuring in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/qV6p730xrRR). Asynchronous Callbacks - Solution Review: Async & Await In this lesson, we will discuss the solutions to the questions in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/qVRQ6glkXxy). OOP in JavaScript - Solution Review: Native & Host Objects In this lesson, we will discuss the solutions to the questions in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/JQR1qp7NmJK). OOP in JavaScript - Quiz: `this` Keyword This lesson will test your understanding of the "this" keyword in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/B63NvN9lPgn). OOP in JavaScript - Challenge: Prototype Property This challenge will test your understanding of the "prototype" property of objects in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/JEPZKW57nwv). Language Basics - Solution Review: Check Parentheses This lesson will discuss the two possible solutions to the challenge in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/qAv7KW07jN2). Language Basics - Quiz: Call, Apply, Bind This lesson will test your understanding of "call", "apply", and "bind" methods in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/x1xYylnj50P). Introduction - Evaluate Yourself In this lesson, you will take a quiz to evaluate yourself. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/m2Q9EX1nx9R). Language Basics - Quiz: Hoisting This lesson will test your understanding of hoisting in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/JEq08o7oPZJ). Introduction - About This Course This lesson describes what the course entails and who it is for. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/N8nyzKG43mD). Language Basics - Solution Review: Hoisting In this lesson, we will discuss the solutions to the questions in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/YMBzwk2zxBA). Language Basics - Challenge: Create an Amount This challenge will test your skills of writing efficient code using functions in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/q2LWgOlrVo7). Language Basics - Challenge: Check Parentheses This challenge will test your skills of writing efficient code using functions in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/JPZ0JJppyp9). Language Basics - Quiz 1: Arrow Functions This lesson will test your basic understanding of arrow functions in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/JPlyvo8BmvD). Type coercion - Challenge: Array or Not? This challenge will test your skills in implementing the "prototype.toString" function in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/JPrwmPMXRJK). Type coercion - Solution Review: prototype.toString & "typeof" In this lesson, we will discuss the solutions to the questions in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/N8jzZn0Wgzv). Language Basics - Quiz 2: Arrow Functions This lesson will test your advanced understanding of arrow functions in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/mE9ALzPn82r). Type coercion - Quiz: prototype.toString & "typeof" This lesson will test your advanced understanding of the "typeof" operator, IIFE, and the "prototype.toString" function in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/gxrLnv9KllD). Language Basics - Quiz: Closure, `setTimeout`, IIFE This lesson will test your understanding of closure, IIFE, and the `setTimeout` function. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/N85RjKQ9ZY6). Language Basics - Solution Review: Bind Function This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/m7JRyJ4wV79). Language Basics - Solution Review: Arrow Functions In this lesson, we will discuss the solutions to the questions in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/RM3l33xryVY). Language Basics - JavaScript Execution: Call Stack & Event Loop This lesson briefly goes over some important concepts of JavaScript such as setTimeout, event table, event queue, event loop, and call stack. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/N861N2QlN5m). Language Basics - Solution Review: Closure, `setTimeout`, Scopes In this lesson, we will discuss the solutions to the questions in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/xlMywpmYp8J). Language Basics - Solution Review: Destructuring This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/N8DwXn82RzD). Type coercion - Challenge: Inheritance Check This challenge will test you in using the "instanceof" operator to check for inheritance in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/N8rwZgArLw6). Type coercion - Challenge: Instance of Array? This tricky challenge will test your understanding of the "instanceof" operator, arrays, and objects in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/x1zOjKBGnkB). Language Basics - Solution Review: Where to Insert This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/gxBovQDyPWl). Language Basics - Challenge: Where to Insert This challenge will test your skills in implementing arrow functions to write compact and efficient code in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/myVj3vnw6DO). Language Basics - Challenge: Create Phone Number This challenge will test your skills in implementing the slice function in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/q2D80X02JmG). Language Basics - Quiz: Rest & Spread Syntax This lesson will test your understanding of rest and spread syntax in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/RM079v3rPLY). Language Basics - Quiz: Closure, `setTimeout`, Scopes This lesson will test your understanding of closure, scopes, and the `setTimeout` function. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/391lBWMYMxA). Language Basics - Solution Review: Create Phone Number This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/gxLDMrwxXAj). Language Basics - Challenge: Insert Elements This challenge will test your skills in implementing the splice and slice functions in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/Y58B3YW5X5A). Language Basics - Immediately Invoked Function Expressions (IIFE) This lesson briefly goes over the concept of Immediately Invoked Function Expressions in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/m2Blgj59603). Language Basics - Solution Review: Closure In this lesson, we will discuss the solutions to the questions in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/7Xx2lk3VpzA). Asynchronous Callbacks - Challenge: Even or Odd? This challenge will test your skills in implementing promises in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/xoqvEKXBr3q). Asynchronous Callbacks - Quiz 1: Promises This lesson will test your understanding of promises, chaining, ".then", and ".catch" statements in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/RMAQpOBDVX0). Asynchronous Callbacks - Challenge: Callback Functions This challenge will test your understanding of callback functions in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/JY88xDyRPRv). Type coercion - Solution Review: Instance of Array? This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/B81Bjql80vN). Asynchronous Callbacks - Challenge: Asynchronous Callback Functions This challenge will test your understanding of asynchronous callback functions and arrow functions in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/gxBW7MYl0Mr). Type coercion - Challenge: Check Instance of Variables This is a tricky challenge that will test your understanding of the "instanceof" operator, functions, the "new" operator, and objects in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/39Q4ZOOjQ3p). Language Basics - Solution Review: Create an Amount This lesson will discuss the two possible solutions to the challenge in the previous lesson: recursive and dynamic. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/xVNpovkjg1E). Type coercion - Solution Review: Validate the Date This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/39o83ZNV4XO). Asynchronous Callbacks - Solution Review: Callback Functions This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/mEw1952Y890). OOP in JavaScript - Quiz: Native & Host Objects This lesson will test your understanding of native and host objects in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/gxgj4MWlr3Y). Event Handling - Solution Review: Event Delegation In this lesson, we will discuss the solutions to the questions in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/xlNQnolx9qq). OOP in JavaScript - Solution Review: `this` Keyword In this lesson, we will discuss the solutions to the questions in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/m7yrPoGGG93). OOP in JavaScript - Solution Review: Prototype Property This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/7nljO71y2GG). OOP in JavaScript - Challenge: isPrototypeOf This challenge will test your skills in implementing "Object" methods and properties and the "isPrototypeOf " function in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/g75jL2mKBzk). OOP in JavaScript - Solution Review: isPrototypeOf This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/gx41Qz8zKkY). Asynchronous Callbacks - Challenge: Print Numbers Sequentially This challenge will test your skills in implementing async/await with promises in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/N7qgk14PxDv). Asynchronous Callbacks - Quiz 2: Promises This lesson will test your understanding of promises, ".then" statements, and asynchronous callbacks in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/xowrx3lK5VB). OOP in JavaScript - Solution Review: Inheritance In this lesson, we will discuss the solutions to the questions in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/m78Djp6zLp0). OOP in JavaScript - Challenge: ES6 Inheritance This challenge will test your skills in implementing inheritance and constructors in ES6 version of JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/3Yq68gZq2nR). OOP in JavaScript - Solution Review: ES6 Inheritance This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/gkLYwk8O2gl). OOP in JavaScript - Challenge: Prototypal Inheritance This challenge will test your skills in implementing the prototype-based inheritance in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/gkBmxkyjNPZ). OOP in JavaScript - Quiz: "super" Keyword This lesson will test your understanding of the "super" keyword in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/YQODPp6D6pK). OOP in JavaScript - Solution Review: Prototypal Inheritance This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/YMpAwmAlXrn). OOP in JavaScript - Solution Review: "super" Keyword In this lesson, we will discuss the solutions to the questions in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/g7wGzWVloKk). OOP in JavaScript - Solution Review: Counting Animals This lesson will explain the solution to the problem in the previous lesson. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/JEEBqEvN8Yv). OOP in JavaScript - Challenge: Let's Make a Burger This challenge will test your skills in implementing mixins in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/N74OVWR5zMz). Type coercion - Quiz 1: "typeof" Operator This lesson will test your understanding of the "typeof" operator in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/qA9p3pkg2G3). Type coercion - Quiz 1: "instanceof" Operator This lesson will test your understanding of the "instanceof" operator in JavaScript. View the lesson [here](https://www.educative.io/courses/javascript-interview-handbook/B1JD1oJgD2W).
About the The JavaScript Interview Handbook: 100+ Interview Questions (Educative) category [The JavaScript Interview Handbook: 100+ Interview Questions (Educative)] (1)