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What is Underscore.js?

Underscore is a powerful JavaScript library that provides a wide range of functional programming tools without altering any native objects. With over 100 functions designed to address common functional programming tasks such as map, filter, and invoke, it also includes distinctive capabilities like function binding, JavaScript templating, rapid index creation, and deep equality checking. Users can choose to load the entire library or specific modules based on their needs. The project is hosted on GitHub, where users can report bugs and participate in feature discussions via the issues page or the Gitter channel. The library's version 1.x ensures backward compatibility with any platform fully supporting ES3, while also taking advantage of more recent JavaScript features when possible. Its collection functions work effortlessly across arrays, objects, and array-like entities. Recent updates have confirmed that Underscore is compatible with Adobe ExtendScript, adding to its versatility. Moreover, support code for Internet Explorer 8 has been integrated, and this support will be included in future releases of Underscore. The commitment to broad compatibility and functional programming principles makes this library an indispensable resource for developers looking to enhance their coding capabilities. Ultimately, its extensive functionality and ease of use solidify its place as a fundamental tool in modern JavaScript development.

What is Parsley?

Meet Parsley, the top-tier JavaScript library designed specifically for form validation. This innovative tool has transformed the way frontend forms are validated, offering unparalleled ease and functionality. Uniquely, Parsley allows you to specify your validation criteria using simple English phrases right in your HTML tags, freeing you from the need to write any JavaScript for basic validation tasks. Its advanced capabilities mean that it automatically detects changes made to your forms and adjusts validation rules in real time, whether you're adding, removing, or altering fields. With more than a dozen essential validators included, Parsley goes even further by offering an impressive Ajax validator and a selection of community-contributed validators for extended functionality. The library focuses heavily on user interface and experience, enabling you to tailor nearly every default behavior to fit your unique needs. Moreover, its commitment to quality ensures that it is almost bug-free, having undergone extensive testing for compatibility with all browsers, including the now-outdated Internet Explorer 8. In an era where user engagement is critical, Parsley emerges as the preferred solution for developers in search of a powerful and adaptable form validation tool. With its ongoing updates and growing community support, Parsley is poised to evolve even further, solidifying its position at the forefront of form validation technology.

Media

Media

Integrations Supported

Dash

Integrations Supported

Dash

API Availability

Has API

API Availability

Has API

Pricing Information

Free
Free Trial Offered?
Free Version

Pricing Information

Free
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

Underscore.js

Company Location

United States

Company Website

underscorejs.org

Company Facts

Organization Name

Parsley

Date Founded

2014

Company Website

parsleyjs.org

Categories and Features

Categories and Features

Popular Alternatives

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