February 2014
Intermediate to advanced
410 pages
8h 15m
English
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Implementing live form validation
It can be very useful for the user to get real-time feedback regarding validation errors as they type in your web form. If you are performing client-side validation with JavaScript as well as server-side validation, this can be achieved easily as you do not need to send a request to the server every time the user types in an input—you can do it all within the client. Once again, it is very important that the same data undergoes additional validation on the server side. The server-side validation can then be fed back to the web form after the user has submitted the form.
Getting ready
This recipe will adapt the client-side validation that has been created as part of the last five recipes. Ensure that you have completed ...
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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.