
SurveyJS is a set of four open-source JavaScript libraries that offer the benefits of a tailor-made in-house survey application, while considerably reducing the time and resources needed to deploy the system. These libraries are independent of specific server code or database requirements and seamlessly integrate with popular JavaScript frameworks, including React, Angular, Vue.js, jQuery, Knockout, and more. They are designed to communicate with any server that can handle JSON requests, ensuring compatibility with various server architectures and databases.
The product family is composed of:
- An open-source MIT-licensed rendering library that renders dynamic JSON-based forms in your web application, and collects responses.
- A self-hosted drag & drop form builder that features an integrated CSS-based theme editor and a GUI for conditional rules. It automatically generates JSON definitions (schemas) of your forms in real time.
- PDF Generator, a library that renders SurveyJS surveys and forms as PDF files in a browser;
- The Dashboard library that allows you to simplify survey data analysis with interactive and customizable charts and tables.
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Install-free PDF editing, form filling, redaction, signing, viewing, and more on your website with RAD PDF!
Packaged as an easy to use library / WebControl (compatible with .NET 3.5+, .NET Core, and .NET 5+), RAD PDF can be used with just about any flavor of ASP.NET including MVC, Razor, Blazor, WebForms, and more.
RAD PDF is compatible with 99% of internet browsers, including those on Linux, Mac OS X, Microsoft Windows, and mobile. No plugins. No Adobe Reader. RAD PDF is more than a PDF to HTML converter. It natively supports all the most common PDF features including annotations, bookmarks, form fields, page labels, and more.
With advanced PDF options, RAD PDF allows you to selectively enable and disable features not available with Adobe Acrobat Reader, like protecting a PDF from being downloaded while still viewable online.
RAD PDF users can use PDF form fields directly from the web browser by enabling PDF form filling and PDF form saving without having to install any software.
Integrating directly with ASP.NET, RAD PDF allows your web application to capture input data, build custom workflows, and provide an intuitive graphical user interface (GUI) for just about any online PDF interaction imaginable!
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Screenfull.js
This is a straightforward wrapper designed for cross-browser compatibility with the JavaScript Fullscreen API, enabling you to switch the entire page or specific elements into fullscreen mode. It effectively smooths out variations in browser implementations, relieving you of that burden. If you find yourself unable to utilize ES modules or require compatibility with older browsers without using transpilers, consider opting for version 5.2.0, which is compact at just 0.7 kB when gzipped. Additionally, you can access an older version via cdnjs. While Safari supports fullscreen on desktop and iPad, it is important to note that iPhones do not have this capability due to browser restrictions, which are not attributable to Screenfull itself. This library allows you to fullscreen either the entire page or specific elements while also hiding the navigation interface on mobile devices. You can easily initiate fullscreen for an element using jQuery and toggle it for images as well. Furthermore, it includes features to detect changes in fullscreen status, remove event listeners, handle fullscreen errors, and manage fullscreen elements with Angular.js. Remember that fullscreen mode can only be activated in response to user interactions such as clicks, touches, or key presses, ensuring a seamless user experience. Overall, this wrapper offers a comprehensive solution for incorporating fullscreen functionality across various web applications.
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Parsley
Introducing Parsley, the leading JavaScript library for form validation. The process of validating frontend forms has reached new heights in both simplicity and power. Unlike any other form validation tool, you can effortlessly express your validation needs in plain English directly within your form's HTML tags, and Parsley will handle everything else for you! There's no requirement to write even a single line of JavaScript for basic validation tasks. Parsley has become even more intelligent, as it automatically senses changes in your forms and adjusts its validation rules accordingly. Whether you add, remove, or modify fields, Parsley will seamlessly keep pace with your changes! It comes equipped with an array of over a dozen highly useful validators. If that’s not sufficient, you can utilize the fantastic extra Ajax validator or explore numerous additional validators contributed by the community. With a strong emphasis on user interface and experience, Parsley allows you to customize nearly every default behavior to meet your specific requirements. It also prides itself on being nearly bug-free, undergoing rigorous testing to ensure compatibility across all browsers, including the older Internet Explorer 8. In a world where user interaction is paramount, Parsley stands out as the go-to choice for developers seeking a robust and flexible form validation solution.
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