The JavaScript Interview Handbook: 100+ Interview Questions/

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Solution Review: Arrow Functions

Solution Review: Arrow Functions

In this lesson, we will discuss the solutions to the questions in the previous lesson.

We'll cover the following...

Quiz: Solution review #

In the previous lesson, you were given the following codes:

HTML
<style>
button {font-size: 50px; }
.on {background: #ff0000;}
</style>
<button id="pushy">Click me</button>
Javascript (babel-node)
const button = document.querySelector('#pushy');
button.addEventListener('click', () => {
    this.classList.toggle('on');
});

For the codes above, you were asked the following question:

Explanation

In JavaScript, arrow functions do not bind their own this, meaning they inherit the one from the parent scope; this is also known as lexical scoping. ...