For Internet users, form filling on many websites and mobile applications has become a common exercise to provide information, like email ID, name, product delivery address, etc, in order to use the services. After putting the required information, the form validates the information and allows you to use the services. However, form validation often frustrated many Internet users in the past as any wrong or incomplete information resulted in the page reload, forcing them to enter the whole correct information again.
#1. jQuery Validation Plugin
jQuery Validation plugin makes it possible for web developers to address the most important functions and the issues pertinent to form validation. jQuery Validation plugin includes important contents, like errors container, file uploads, dynamics forms, etc. However, as nothing is perfect in this world, jQuery Validation Plugin also has a disadvantage, and that is its jQuery dependency. The plugin has got excellent documentation, which is being used by many developers world over. English is the main language for default error messages, though translation option is available for as many as 37 languages.
Unlike many other validation libraries that are very tightly coupled to a language or framework, Validate.js provides a cross framework and cross language way of validating data. Besides, the library is free of any required external dependencies and offers easy documentation.
Verify.js, another MIT licensed form validation library, is fully customizable, easily extendable, unobtrusive, and includes grouped validations as well as asynchronous validations. However, before choosing it as a form validation tool, give a thought over its documentation which is currently in progress. There is a note on the top of its documentation, saying, “As this library and corresponding documentation is a work in progress, this API is subject to change.”
The goals behind GValidator development are as follows:
A user-friendly experience
Code flexibility and extensibility
A reusable and lightweight library
Promote adoption via ease of use
Cross browser compatibility
Semantically clean code
Standards compliant code
#7. jQuery Ketchup Plugin
jQuery Ketchup Plugin obtains license from GPL MIT and sports features like drag and drop. It’s API is inline and written with data-attributes. The plugin is very lightweight and comes packed with 18 basic validations to help you for future programming.
#8. Bootstrap Validator
Bootstrap Validator is MIT licensed and used as a jQuery plugin for bootstrap, semantic UI, UI kit, pure and foundation. It supports HTML 5 and works with many other plugins too. Bootstrap Validator comes with 51 validators and 38 language packs. However, the library does not support Internet Explorer 9 and older as it depends on the HTML5 Constraint Validation API.
ApproveJs is an MIT licensed library that allows you to handle all of the validations by yourself. It doesn't automatically attach itself to input change events or form submit events. The library is for you if you want to control every function by your hand, since it does not manipulate the DOM for you by automatically displaying errors. It exposes a single method, value() and leaves you to decide when a value is validated and