October 2024
Intermediate to advanced
286 pages
5h 48m
Spanish
Content preview from Libro de recetas de la API web
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Capítulo 4. Solicitudes de red
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Introducción
Te resultaría difícil encontrar hoy en día una aplicación web que no envíe peticiones a la red, en . Desde los albores de la Web 2.0 y el novedoso enfoque conocido como Ajax (Asynchronous JavaScript and XML), las aplicaciones web han estado enviando peticiones asíncronas para obtener nuevos datos sin recargar toda la página. La API XMLHttpRequest inició una nueva era de aplicaciones JavaScript interactivas. A pesar de su nombre, XMLHttpRequest (o XHR, como se conoce a veces) también puede funcionar con JSON y cargas útiles de datos de formulario.
XMLHttpRequest supuso un cambio en las reglas del juego, pero puede resultar complicado trabajar con la API. Con el tiempo, bibliotecas de terceros, como Axios y jQuery, añadieron API más ágiles que envolvían la API XHR central.
En 2015, una nueva API basada en Promise llamada Fetch se convirtió en un nuevo estándar, y los navegadores empezaron gradualmente a añadir soporte para ella. Hoy en día, Fetch es la forma estándar de realizar peticiones asíncronas desde tus aplicaciones web.
Este capítulo explora XHR y Fetch, así como algunas otras API para lacomunicación en red:
- Balizas
-
Una simple petición POST unidireccional ideal para enviar datos analíticos
- Eventos enviados por el servidor
-
Una conexión persistente unidireccional con un servidor para recibir eventos en tiempo ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.