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10 Useful JavaScript Form Validation Libraries

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.

But, problems don’t last forever in the technology world. That said, I am unveiling 10 useful JavaScript form validation libraries that show instant alert whenever an Internet user enters any wrong information, thereby saving the time of entering the whole information again. These JavaScript form validation libraries check the veracity of the information entered before sending it to the server. As a result, an invalid info dialog instantly appears in front of the info tab in which wrong information was entered, which saves the time and hassles of putting the whole correct information again.

10 Useful JavaScript Form Validation Libraries

#1. jQuery Validation Plugin

jQuery Validation Plugin.pngjQuery Validation, an MIT licensed plugin and created by jQuery mega creator Jörn Zaefferer, is one of the most popular choices of JavaScript developers. The plugin is tested with jQuery 1.6.4, 1.7.2, 1.8.3, 1.9.0.

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.

Click here to know “6 JavaScript Frameworks/Libraries to Look for in 2017”

#2. Validate.js

Validate.js also obtains licence from MIT, and is popular among web developers for being lightweight. When gzipped, Validate.js weighs in at around 2kb. Validate.js opens gates to validate JavaScript object in a declarative manner. Since Validate.js is unit tested with 100% code coverage,  developers can use it for production.

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.

#3. Parsley.js

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Parsley.js, an MIT licensed JavaScript form validation library, is powerful and easy to use. The library allows automatic detection of form modifications, and adapts the validations accordingly. Parsley is UX focussed and meets your exact requirements by allowing you to override almost every Parsley default behavior. Parsley is strongly tested and  is fit for every browser, including IE8. Using Parsley, you enable your users to get feedback on their form submission before sending it to the server. Parsley also comes with numerous predefined constraints, type constraints and extra validators.

#4. Verify.js


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.”

#5. GValidator

GValidator is LGPL licensed and is one of the most lightweight javascript form validation libraries. As GValidator is an automatic program, it frees you from the need of using even a single line of written command. Paying heed to high demand of browser applications, developers have made it compatible with most of the operating systems.


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

#6. Garlic.js

Garlic.png

Many Internet users feel annoyed when they are filling a huge web form and the tab closes due to browser crash or power failure or back button press. This often forces them to leave your website. If you don’t want this to happen with your users, you could give a try to Garlic.js, an MIT licensed JavaScript form validation library. The library saves precious data in event of accidental closure of the tab or browser crash. Some of its other useful features are custom javascript or ajax validation, auto expiration and infinite persistency.

#7. jQuery Ketchup Plugin

JS-ketchup.png

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.png

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.

#9. xtypejs

xtype.png

Xtypejs, an MIT licensed library, is popular for being elegant, highly efficient data validation for JavaScript. It provides nearly 40 highly efficient, data-validating pseudo types. Using xtypejs, you can enhance the efficiency and readability of your application as it allows you to unify the most basic but common data and type validations in JavaScript apps, into single, concise, highly optimized operations.

#10. ApproveJs

ApproveJS.png

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

how errors are displayed.

These JavaScript form validation libraries saves your site users from entering their information again in the event of accidental closure of their computer tab. Apart from the 10 listed above, there are many other libraries as well you could use for form validation purpose. So, don’t feel offended if I missed your favorite one.

Have you ever used a JavaScript form validation library before. Do you want to add to what’s already being discussed. As always, your views are vital for all our readers, please share them in the comment box below.

Sources: gitbub.com

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