Valid XHTML YouTube embed code generator - Online tool. Validator.nu. Web Form Validation: Best Practices and Tutorials | How-To. Advertisement Ideally, users will fill the web form with necessary information and finish their job successfully. However, people often make mistakes. This is where web form validation comes into play.
The goal of web form validation is to ensure that the user provided necessary and properly formatted information needed to successfully complete an operation. In this article we will go beyond the validation itself and explore different validation and error feedback techniques, methods and approaches. Validation methods User’s input can be validated on the server and on the client (web browser). Server-side validation In the server-side validation, information is being sent to the server and validated using one of server-side languages. The exception is validation using Ajax. This diagram shows differences between client-side and server-side validation and other techniques. Client-side validation Server-side validation is enough to have a successful and secure form validation. What to validate. Using Ajax to Validate Forms. There’s two types of validation: Simple, server-independent validation, i.e. checking email address are the right format, password and confirm password matches, etc.Server-based validation, with can be delivered with a page refresh, or live (as this tutorial will explain), i.e. for checking whether a username is taken.
What can we do? Live username checkingPassword confirmation and strengthChecking if an email address is already registeredURL validation, i.e. Basecamp’s site address checks if the URL is available (pretty much the same as username validation) So why do it? It makes the user’s experience quicker, or arguably betterIt’s not much extra work to put in place (explained below) Examples in the wild Howto As with all these tutorials, I expect that you have built your solution to the point where it works, but now we want to add our splash of JavaScript magic. In our baseline example, my requirements are: Username validation Our PHP function to validate the username reads: Markup jQuery.
25+ jQuery Plugins that enhance and beautify HTML form elements. Introduction This article will cover the following elements: Advertisement Form Skinning Frustrated with the form elements inconsistency among different browsers? With these jQuery plugins, you can unified the look and feel of all your form elements. Form Validation It's always good to have client side form validation. Masking Masking can help to avoid human mistake. File Uploader These file uploader transform the orginal input file element into a more robust file uploader that able to upload multiple files and having a progress bar to indicate the upload progress. Checkbox & Radio Button Spice it up your checkbox and radio button with these jQuery plugins!
Spin Button & Slider Spin button can be useful sometimes. Auto Complete You must have seen the auto complete functionality from Apple.com, google.com and all the major websites. Calendar & Time picker The old school method to let user select date and time are using drop down lists (day, month and year). Drop Down Menu (Select Element) Color Picker.