February 2018
Intermediate to advanced
298 pages
8h 22m
English
Content preview from Learn ECMAScript - Second Edition
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Cookies versus local storage
By now, you may have observed that cookies and local storage serve almost completely different purposes. The only thing they have in common is that they store data. The following is a brief comparison of cookies and local storage:
| Cookies | Local storage |
| Cookies are transferred to a server on every request automatically by the browser | To transfer local storage data to a server, you need to manually send an Ajax request or send it through hidden form fields |
| If data needs to be accessed and read both by the client and server, use cookies | If the data needs to be accessed and read only by the client, use local storage |
| Cookies can have an expiration date, after which they are automatically deleted | Local storage ... |
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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.