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Full-Stack React, TypeScript, and Node
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In this chapter, we'll review certain important features of JavaScript in its latest ES6+ form (I've added the plus sign to indicate ES6 and beyond). It is important to understand that although this book uses TypeScript, the two languages are complementary. In other words, TypeScript does not replace JavaScript. It augments and enhances JavaScript, adding features that make it better. Therefore, we'll do a review of some of the most important features in the JavaScript language. We'll review variable scoping and the new const
and let
keywords. Also, we'll dive deeper into the this
keyword and how we can switch it if needed. We'll also learn about the many new features in JavaScript, such as the new array functions and async await
. This knowledge will give us a solid foundation upon which we can code in TypeScript.
In this chapter, we're going to cover the following main topics: