Lifetime access to this course
Array.includes()
In this lesson, you'll learn about the array.includes() method in JavaScript, which is used to determine whether an array contains a specific value. ### Array.includes() The includes() method checks if an array contains a certain value and returns true or false based on the result. This method is case-sensitive, meaning it distinguishes between uppercase and lowercase letters. #### Example: Checking for a Book in a Bookshelf
The rest of this lesson is waiting.
Join JS Mastery Pro to unlock it.

Complete Path to JavaScript Mastery
$300
Buy the Course OnlyBuild advanced web app
Certificate of completion included
Great for focused learners who just want this course





Get Full Access
$149 /month
Lock in a year & save—2 months free!
Access to all courses
Quizzes, mini-challenges, AI summaries, inline sandboxes
Participation in a private community
Build real production-grade apps
Mock interviews & project reviews
Weekly live sessions & member-only access