Introduction to Asynchronous JavaScript

• async

  16 28,071 8.1 JavaScript

  Async utilities for node and the browser

If you are using lots of asynchronous functions, it can be worthwhile to use an asynchronous function library, instead of having to create your own utility functions. Async.js is a popular library that has many useful tools for dealing with asynchronous code.

• q

  9 14,957 0.0 JavaScript

  A promise library for JavaScript

Promises are a popular way of getting rid of callback hell. Originally it was a type of construct introduced by JavaScript libraries like Q and when.js, but these types of libraries became popular enough that promises are now provided natively in ECMAScript 6.

• SurveyJS

  surveyjs.io sponsored

  Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.

  

• when

  3 3,440 1.8 JavaScript

  A solid, fast Promises/A+ and when() implementation, plus other async goodies.

  

Promises are a popular way of getting rid of callback hell. Originally it was a type of construct introduced by JavaScript libraries like Q and when.js, but these types of libraries became popular enough that promises are now provided natively in ECMAScript 6.

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