Скачать или смотреть JavaScript Essentials: Data Types, Strings, Numbers & Arrays (Week 3 Session 6)

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In this class, we began with a quick revision of variable types and console logging. We then explored two special data types: null and undefined, understanding their differences and use cases.

Students learned about string properties and methods to manipulate text, and practiced performing basic calculations with number variables.

The session also introduced arrays—how to create them, access their elements, and use common array methods and properties to work with collections of data.

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