What is the most painful part of using typescript in general? Handling a value from JavaScript. The reason of having hard times with JavaScript.
Handling a value from JavaScript.
The reason of having hard times with values coming from an input sources (like an html form) is that you don’t have the exact data type beforehand. I mean, you can’t write functions using the input value which could benefit from TypeScript type system because an input value can be anything at that point, another function, a number, a string, an object, or whatever else. That’s why many programmers try to avoid types using the type called “any” in this case. A software developer with advanced TypeScript knowledge never uses the type “any”, because it would be equal to not using TypeScript at all, just would write native JavaScript.
The question is obvious: *is there any way to put a JavaScript value into the TypeScript context? *The short answer is: yes. For the detailed answer, let’s see an example:
You have an input value — no matter what source it comes from — for which you want to use a TypeScript context. But how can you pass the unknown type of input value to the type system provided by TypeScript? This is an often misunderstood process, although the flow is very simple.
TypeScript extends JavaScript by adding Types. There are many great reasons to switch to TypeScript. Especially if your team uses JavaScript. There are some reasons to not use TypeScript as there are with any language or framework.
TypeScript Tutorial For JavaScript Developers - TypeScript Basics. I will show you guys 4 example of JavaScript code, and how to convert it to TypeScript. This is a typescript beginners tutorial.
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Habéis oido hablar de TypeScript? Porqué se está utilizando y qué aporta que no tenga JavaScript? Se puede utilizar con Angular o con React? En el backend? En éste vídeo os explico porqué utilizo TypeScript y cómo instalarlo!