Underscore.js 
Underscore.js is used by 2.38% of sites
Official Website
http://underscorejs.orgCategory
JavaScript Libraries
Underscore.js is a popular JavaScript library that provides a set of utility functions and functional programming helpers to simplify and enhance JavaScript development. It offers a wide range of functions that assist with common programming tasks, such as manipulating arrays, objects, collections, and handling functional programming concepts.
Key features and functionalities of Underscore.js include:
Collection Manipulation: Underscore.js provides a set of functions for working with arrays, objects, and other collections. These functions include filtering, mapping, reducing, sorting, grouping, and more. They allow you to perform complex operations on collections with concise and expressive code.
Functional Programming Helpers: Underscore.js includes functions inspired by functional programming paradigms. It provides tools like map, reduce, filter, and each that facilitate functional programming patterns and make working with data more declarative and expressive.
Template Engine: Underscore.js includes a simple and lightweight template engine that allows you to generate HTML markup dynamically. It provides template compilation and rendering functions, making it easier to generate dynamic content with data.
Object Manipulation: Underscore.js offers functions for working with objects, such as deep cloning, extending objects, merging, and extracting values. These functions provide convenient ways to manipulate and transform object data.
Array Manipulation: Underscore.js provides a variety of functions for working with arrays. It includes functions for finding elements, flattening arrays, sorting, shuffling, and manipulating array contents. These functions help in simplifying array manipulation tasks.
Functional Utilities: Underscore.js includes a set of utility functions that assist with common programming tasks. These utilities include functions for type checking, object iteration, function binding, and more. They provide convenience and efficiency in handling various programming scenarios.
Chaining: Underscore.js supports method chaining, allowing you to chain multiple operations together. This chaining syntax enables you to write more readable and concise code by combining multiple functions in a fluent and expressive manner.
Cross-Browser Compatibility: Underscore.js is designed to work across different web browsers and environments. It provides consistent behavior and handles browser inconsistencies, ensuring reliable and predictable results.
Extensibility: Underscore.js can be extended with custom functions and behaviors to meet specific project requirements. You can add your own utility functions or modify existing ones, allowing for customization and adaptation to specific use cases.
Underscore.js is often used alongside other JavaScript frameworks and libraries to enhance the development process and improve code quality. It provides a comprehensive set of utility functions and functional programming tools, making it a valuable tool for JavaScript developers.
Key features and functionalities of Underscore.js include:
Collection Manipulation: Underscore.js provides a set of functions for working with arrays, objects, and other collections. These functions include filtering, mapping, reducing, sorting, grouping, and more. They allow you to perform complex operations on collections with concise and expressive code.
Functional Programming Helpers: Underscore.js includes functions inspired by functional programming paradigms. It provides tools like map, reduce, filter, and each that facilitate functional programming patterns and make working with data more declarative and expressive.
Template Engine: Underscore.js includes a simple and lightweight template engine that allows you to generate HTML markup dynamically. It provides template compilation and rendering functions, making it easier to generate dynamic content with data.
Object Manipulation: Underscore.js offers functions for working with objects, such as deep cloning, extending objects, merging, and extracting values. These functions provide convenient ways to manipulate and transform object data.
Array Manipulation: Underscore.js provides a variety of functions for working with arrays. It includes functions for finding elements, flattening arrays, sorting, shuffling, and manipulating array contents. These functions help in simplifying array manipulation tasks.
Functional Utilities: Underscore.js includes a set of utility functions that assist with common programming tasks. These utilities include functions for type checking, object iteration, function binding, and more. They provide convenience and efficiency in handling various programming scenarios.
Chaining: Underscore.js supports method chaining, allowing you to chain multiple operations together. This chaining syntax enables you to write more readable and concise code by combining multiple functions in a fluent and expressive manner.
Cross-Browser Compatibility: Underscore.js is designed to work across different web browsers and environments. It provides consistent behavior and handles browser inconsistencies, ensuring reliable and predictable results.
Extensibility: Underscore.js can be extended with custom functions and behaviors to meet specific project requirements. You can add your own utility functions or modify existing ones, allowing for customization and adaptation to specific use cases.
Underscore.js is often used alongside other JavaScript frameworks and libraries to enhance the development process and improve code quality. It provides a comprehensive set of utility functions and functional programming tools, making it a valuable tool for JavaScript developers.