September 2024
Intermediate to advanced
346 pages
9h 51m
Spanish
Content preview from Desarrollo Web con Node y Express, 2ª Edición
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Capítulo 8. Manejo de formularios
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La forma habitual de recoger información de tus usuarios es utilizarformularios HTML. Tanto si dejas que el navegador envíe el formulario normalmente, como si utilizas Ajax o empleas controles frontales extravagantes, el mecanismo subyacente sigue siendo, por lo general, un formulario HTML. En este capítulo, hablaremos de los diferentes métodos para manejar formularios, la validación de formularios y la carga de archivos.
Envío de datos del cliente al servidor
En términos generales, tus dos opciones para enviar datos del cliente al servidor son la cadena de consulta y el cuerpo de la petición. Normalmente, si utilizas la cadena de consulta, estás haciendo una petición GET, y si utilizasel cuerpo de la petición, estás utilizando una petición POST. (El protocolo HTTP no te impide hacerlo al revés, pero no tiene sentido: mejor ceñirse a la práctica habitual en este caso).
Es un error común creer que POST es seguro y GET no lo es: en realidad, ambos son seguros si utilizas HTTPS, y ninguno lo es si no lo haces. Si no utilizas HTTPS, un intruso puede ver los datos del cuerpo de una petición POST con la misma facilidad que la cadena de consulta de una petición GET. Sin embargo, si utilizas peticiones GET, tus usuarios verán todos sus datos introducidos (incluidos los campos ocultos) en la cadena de consulta, lo que resulta feo y desordenado. ...
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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.