One of the most common tasks of a (web) developer is to implement validation for forms using latest technologies like jQuery. Validation needed almost for every form on every website or a blog mostly on wordpress as you simply cannot trust user input these days, who can throw millions of spam messages to crash your website. When it comes to simpler user experience, having your form validation happen instantly on the same page is a lot cleaner than reloading pages and possibly losing some form content. In this article we have showcased useful 10 Tips Adding Form Validation to WordPress Comments Using jQuery to do some instant checking on an example comment form.
For our example we’re going to add form validation to a comment form in the default WordPress theme. The process is much the same for any type of form validation however so you could easily apply this technique to a non-WordPress example.
The theme we will add the validation to is WordPress’ Default theme that comes packaged with every install. So if you’d like to follow along completely, just head to WordPress.org and download and install a copy on your server.
With validation, users can submit their comment and instantly see if they’ve hit an issue. There is no need to submit the page and get WordPress’ default “There is a problem…” page. Instead, errors are displayed inline instantly.
In this tutorial, i am going to show how easy to validate a form with jquery. For this you will need to download the following:
I will focus mostly on front-end validation and dive into back-end validation where needed. Much of this article can be used for any back-end, including PHP, J2EE, .NET and Lotus Notes.
When it comes to form validation, it’s hard to have a versatile solution that works with every form. Figuring out how to display errors is not a simple task. This is something I tried to remedy with this script. When an error needs to be displayed, the script creates a div and positions it in the top right corner of the input. This way you don’t have to worry about your HTML form structure. The rounded corner and shadow are done with CSS3 and degrade well in non compliant browsers. There is no images needed.
Hi guys and welcome to a new tutorial of yensdesign.com! Some of you ask us about the possibility of create a tutorial about how to validate forms in server side (using PHP). So i wrote a tutorial about it, adding some interesting features with jQuery:
Form Validation with jQuery from Scratch
You need a jQuery contact form for your website but don’t know how to create one? Please read along and maybe you’ll get lucky. A contact form is very helpful in giving your visitors a way to contact you. In this tutorial, I will help you on how to create your own jQuery contact form using PHP and JQuery.
This screencast walks through the code that powers a fairly advanced web form. It utilizes jQuery to hide and show inputs as needed as well as power three plugins. One for applying fancy styling, one for validation, and one for the serializing of the inputs and AJAX submission. We then use PHP to optionally save the users name and email, as well as send the actual email.
This tutorial expects you to have already built your form up to the point where it works, but now needs some validation.
When you finish this tutorial, the username example, you have built, will check with the server whether the chosen name is a) valid and b) available. And the avatar example will try to load the URL in to a hidden image, if it fails, it will show the appropriate message.
User’s input can be validated on the server and on the client (web browser). Thus we have server-side and client-side validation. We’ll discuss pros and cons of each.