November 2011
Intermediate to advanced
384 pages
13h 23m
English
Content preview from HTML5: Your visual blueprint™ for designing rich web pages and applications
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STORE AN OBJECT USING THE INDEXEDDB API
You can store an object into an IndexedDB object store using the add() request method generated by a read-write transaction. Because all transactions run asynchronously, the request/event model allows your code to know when a transaction has completed.
Only an array or generic object can be stored, and not simple strings or numbers. Custom objects that are built with constructors will be destroyed, but their properties and values will survive.
function addObject(object) { var transaction = db.transaction(objectStore, IDBTransaction. READ_WRITE); var store = transaction. objectStore(objectStore); var request = store.add(object); request.onsuccess = function(event) {...}; request.onerror = function(event) ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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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.