FAQ: jQuery Setup - Review: jQuery Introduction

Frequently Asked Questions jQuery FAQ
1

Community%20FAQs%20on%20Codecademy%20Exercises

This community-built FAQ covers the “Review: jQuery Introduction” exercise from the lesson “jQuery Setup”.

Paths and Courses
This exercise can be found in the following Codecademy content:

Web Development

Introduction to jQuery

FAQs on the exercise Review: jQuery Introduction

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2

In the code that was in the editor the arrow function is as follows:

$navDropdown.on('mouseleave', () => {
    $navDropdown.hide();
  })

However in an earlier JavaScript lesson I learned the curly braces were not always needed in arrow function expressions. Is there a reason why the code is not as follows:

  $navDropdown.on('mouseleave', () =>   $navDropdown.hide())
3

The curly braces are optional when you are returning one line of code. However, if there are multiple lines you must wrap them in curly braces. For this code we could do with or without the curly braces