Fundamentos de TypeScript
¿Qué es TypeScript y por qué usarlo?
Instalación de Node.js y TypeScript CLI, configuración de tsconfig.json
Tipos primitivos: string, number, boolean, null, undefined de Typescript
Tipos especiales: any, unknown, never, void de TypeScript
Arrays, Tuplas, Enums en TypeScript
Funciones e Interfaces
Declaración de funciones, tipado de parámetros y valores de retorno
Parámetros opcionales, valores por defecto y sobrecarga de funciones
Creación y uso de interfaces de TypeScript
Propiedades opcionales, readonly, extensión de interfaces en TypeScript
Clases y Programación Orientada a Objetos
Creación de clases y constructores En TypeScript
Modificadores de acceso (public, private, protected) en Typescript
Uso de extends, sobreescritura de métodos en TypeScript
Introducción a Genéricos en Typescript
Restricciones con extends, genéricos en interfaces
Módulos y Proyectos
Importación y exportación de módulos en TypeScript
Agregando mi archivo de Typescript a un sitio web
Configuración de un proyecto Web con TypeScript
Selección de elementos, eventos, tipado en querySelector en TypeScript
Crear un proyecto de React.js con Typescript
Crea un proyecto con Angular y Typescript
Crea una API con Typescript y Express.js
Conceptos Avanzados
Introducción a types en TypeScript
Implementación de Decoradores de TypeScript
Async/await en Typescript
Pruebas unitarias con Jest y TypeScript
Principios SOLID, código limpio, patrones de diseño en Typescript
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Integrating TypeScript into web projects is a fundamental skill for modern developers. This programming language, which enhances JavaScript typing, can significantly enhance your web applications by providing early error detection and better code documentation. Learning how to unify TypeScript with HTML will allow you to take advantage of the best of both worlds: the static typing of TypeScript and the universality of JavaScript in the browser.
How to integrate TypeScript into a web project?
So far, you may have worked with TypeScript in isolation, but the true power of this language manifests itself when you incorporate it into real web projects. Integration is surprisingly simple and requires only a few steps.
To begin, we need to create a basic structure for our web project:
- Create a folder called "web" within your TypeScript project.
- Inside this folder, create a basic HTML file called "index.html".
- Add the standard HTML structure to this file.
The HTML can be as simple as this:
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>TypeScriptWeb Project</title></head></head><body> <!-- Your HTML content here -->
<script src="main.js"></script></body></html></html>It is important to note that in the HTML we are referencing a JavaScript file(main.js), not a TypeScript file. This is because browsers cannot directly interpret TypeScript files.
How to convert TypeScript to JavaScript for the browser?
The next step is to create a TypeScript file that we will then compile to JavaScript:
- Create a file called "main.ts" in the same folder as your HTML.
- Write some simple TypeScript code, for example:
console.log("Hello from my browser");- Compile the TypeScript file to JavaScript using the TypeScript compiler (tsc):
tsc main.tsThis command will generate a main.js file which is exactly what our HTML is expecting. The magic of TypeScript is that it allows us to write statically typed code, but then compile it to pure JavaScript that any browser can understand.
How to visualize and test your web project with TypeScript?
Once you have your HTML and your TypeScript file compiled, you need a way to see your project in action. There are several Visual Studio Code extensions that make this process easy:
Live Server or Live Preview.
These extensions allow you to run a local server to view your web project in real time:
- Live Server from Ritwick Dey: With over 60 million downloads, this popular extension adds a "Go Live" button to VS Code.
- Microsoft'sLive Preview: An alternative that provides an integrated preview within the editor.
To use these extensions:
- Install one of them from the VS Code marketplace.
- Open your HTML file.
- Click the "Go Live" or "Show Preview" button depending on the extension you have installed.
- A local URL (similar to localhost) will open showing your web page.
Verifying TypeScript integration
To confirm that your TypeScript code is working correctly:
- Open the browser's developer tools (F12 or right click → Inspect).
- Go to the "Console" tab.
- You should see the "Hello from my browser" message you defined in your TypeScript file.
This process demonstrates that TypeScript has transferred its functionality to JavaScript, and this code is being executed correctly by the browser through the HTML file.
Why is this integration important?
The ability to unify TypeScript with traditional web projects offers numerous advantages:
- Improved error detection: TypeScript identifies potential problems before they reach the browser.
- Improved auto-completion: Code editors provide more accurate suggestions thanks to the type system.
- Safer refactoring: Code changes are safer with type checking.
- Implicit documentation: Types serve as documentation for other developers.
This integration does not represent an obstacle in web application development, but provides an additional layer of security and efficiency in your workflow.
Combining TypeScript with HTML is just the beginning. As you progress, you will be able to integrate frameworks such as React, Angular or Vue.js, all of which benefit greatly from TypeScript's type system.
Have you tried integrating TypeScript into your web projects? Share your experiences and any challenges you've encountered with this integration. Your perspective might help other developers who are just starting out on this journey.
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