Master JavaScript programming with this complete beginner’s tutorial. Learn the fundamentals of JavaScript, a versatile programming language.

This tutorial provides a comprehensive guide to JavaScript Map and Set, explaining their differences, use cases, and how to use them.

Arrays provide a lot of methods. To make things easier, in this chapter, they are split into groups. The element was removed, but the array still has 3 elements, we can see that arr.length == 3.

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