September 2013
Beginner to intermediate
480 pages
9h 59m
English
Content preview from HTML5 Data and Services CookbookBecome 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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Validating US zip codes
Validating zip codes at the client side can be useful on web pages with address forms.
Entering numbers is an error-prone process. It would be great for the user if we could provide some kind of basic immediate validation to inform them of a possible error in their data entry.
On the other hand, a satisfyingly complete zip code database has a non-trivial size. Loading the complete database at the client side might be difficult and non-optimal.
In this recipe, we're going to write a client-side zip code validation function. In the process, we're going to learn what it takes to convert a non-trivial zip code database to a smaller representation which can be loaded at the client side.
Getting ready
Let's download the zip code database ...
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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.