March 2025
Intermediate to advanced
286 pages
5h 53m
Italian
Content preview from Web API Cookbook
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Capitolo 2. Persistenza semplice con laWeb Storage API
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Introduzione
L'API di Web Storage conserva i dati semplici localmente, nel browser dell'utente. Puoi recuperare questi dati in un secondo momento, anche dopo aver chiuso e riaperto il browser.
Questa API ha un'interfaccia Storage che fornisce accesso e persistenza dei dati. Non si creano istanze di Storage direttamente; ci sono due istanze globali: window.localStorage e window.sessionStorage. L'unica differenza tra queste è il tempo di conservazione dei dati.
sessionStorage sono associati a una sessione specifica del browser. I dati vengono conservati se la pagina viene ricaricata, ma chiudendo il browser si perdono completamente. Schede diverse per la stessa origine non condividono gli stessi dati persistenti.
D'altra parte, localStorage condivide lo stesso spazio di archiviazione tra tutte le schede e le sessioni per la stessa origine. Il browser conserva questi dati anche dopo la chiusura del browser. In generale, l'archiviazione di sessione è una buona scelta se vuoi memorizzare qualcosa di effimero o sensibile che vuoi venga distrutto una volta chiuso il browser.
In entrambi i casi, lo spazio di archiviazione è specifico per una determinata origine.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.