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Microsoft Script Debugger is relatively minimal debugger for Windows Script Host-supported scripting languages, such as VBScript and JScript. Its user interface allows the user to set breakpoints and/or step through execution of script code line by line, and examine values of variables and properties after any step. In effect, it provides a way for developers to see script code behavior as it runs, thus eliminating much of the guess-work when things don’t quite work as intended.

Microsoft considers it to be deprecated in favor of the more sophisticated Microsoft Script Editor (MSE.EXE), an optional tool included in Microsoft Office 2000 through Office 2007. Also, Internet Explorer 8 comes with a different, tightly integrated JScript debugger part of the Internet Explorer Developer Tools. Read more…

Jasmine is an open source testing framework for JavaScript. It aims to run on any JavaScript-enabled platform, to not intrude on the application nor the IDE, and to have easy-to-read syntax. It is heavily influenced by other unit testing frameworks, such as ScrewUnit, JSSpec, JSpec, and RSpec. Read more…

Wakanda is a JavaScript platform to develop and run web or mobile apps.

It is based on open standards technologies including AngularJS, Ionic, Node.js, and TypeScript, and is supported on Linux (deployment only), Microsoft Windows, and macOS (Studio development). Read more…

Active Server Pages (ASP), later known as Classic ASP or ASP Classic, is Microsoft‘s first server-side script engine for dynamically generated web pages.

ASP.NET, first released in January 2002, has superseded ASP. Read more…

A JavaScript library is a library of pre-written JavaScript which allows for easier development of JavaScript-based applications, especially for AJAX and other web-centric technologies. Read more…

Dart is a general-purpose programming language originally developed by Google and later approved as a standard by Ecma (ECMA-408). It is used to build web, server, desktop, and mobile applications.

Dart is an object-oriented, class defined, garbage-collected language using a C-style syntax that transcompiles optionally into JavaScript. It supports interfaces, mixins, abstract classes, reified generics, static typing, and a sound type system. Read more…

WebSharper is an open-source and commercial web-programming framework that allows web developers to create and maintain complex JavaScript and HTML5 front-end applications in the F# programming language. Other than a few native libraries, everything is F# source. Read more…

QUnit is a JavaScript unit testing framework. Originally developed for testing jQuery, jQuery UI and jQuery Mobile, it is a generic framework for testing any JavaScript code. It supports client-side environments in web browsers, and server-side (e.g. Node.js).

QUnit’s assertion methods follow the CommonJS unit testing specification, which itself was influenced to some degree by QUnit. Read more…

Koding is a development environment automation platform owned by Koding, Inc. which allows software developers define their development environments in a definition file, called “stack script” this file then calls to various cloud providers to provision defined development environment. This file is visible to the entire team and can be updated by the administrators of the account. Environments that are provisioned by this file can be shared in a web browser without the needs of downloading the software development kits – developers are also able to download a command line tool called “kd” which allows them to mount provisioned VMs to their computers thus enabling development using developers’ local IDEs. Since the platform is able to create linux VMs it supports multiple programming languages, including C, C++, Go, Java, Node.js, Perl, PHP, Python, and Ruby.
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AtScript was a proposed JavaScript-based scripting language extending Microsoft‘s TypeScript and transcompiling to JavaScript. It was introduced in October 2014 at the ng-Europe conference by the developers of Google‘s AngularJS web development framework as the language that the upcoming Angular 2.0 would be built with.

AtScript was originally intended to run on top of TypeScript, while including some features from Dart. In October 2014, Google announced that Angular 2.0 would be written in AtScript. In March 2015, Microsoft announced that many of AtScript’s features would be implemented in the TypeScript 1.5 release, and that Angular 2.0 would be built on pure TypeScript. Read more…

Brendan Eich (/ˈaɪk/; born July 4, 1961) is an American technologist and creator of the JavaScript programming language. He co-founded the Mozilla project, the Mozilla Foundation and the Mozilla Corporation, and served as the Mozilla Corporation’s chief technical officer and briefly its chief executive officer. He is the CEO of Brave Software. Read more…

In computing, JavaScript Object Notation (JSON) (/ˈdʒeɪsən/ “jay-son”, /dʒeɪˈsɒn/) is an open-standard file format that uses human-readable text to transmit data objects consisting of attribute–value pairs and array data types (or any other serializable value). It is a very common data format used for asynchronous browser–server communication, including as a replacement for XML in some AJAX-style systems.

JSON is a language-independent data format. It was derived from JavaScript, but many programming languages include code to generate and parse JSON-format data. The official Internet media type for JSON is application/json. JSON filenames use the extension .json. Read more…

Dynamic HTML, or DHTML, is an umbrella term for a collection of technologies used together to create interactive and animated websites by using a combination of a static markup language (such as HTML), a client-side scripting language (such as JavaScript), a presentation definition language (such as CSS), and the Document Object Model (DOM). The application of DHTML was introduced by Microsoft with the release of Internet Explorer 4 in 1997.

DHTML allows scripting languages to change variables in a web page’s definition language, which in turn affects the look and function of otherwise “static” HTML page content, after the page has been fully loaded and during the viewing process. Thus the dynamic characteristic of DHTML is the way it functions while a page is viewed, not in its ability to generate a unique page with each page load. Read more…

WebAssembly (often shortened to Wasm) is a standard that defines a binary format and a corresponding assembly-like text format for executables used by web pages.

The purpose of Wasm is to enable the JavaScript engine of a web browser to execute page scripts nearly as fast as native machine code. But this is not a full replacement for JavaScript; rather, Wasm is only intended for performance-critical portions of page scripts. Wasm code runs in the same sandbox as regular script code, but only regular scripts have direct access to the DOM tree. Read more…

John Resig is an American software engineer and entrepreneur, best known as the creator and lead developer of the jQuery JavaScript library. Read more…

Node.js is an open-source, cross-platform JavaScript run-time environment that executes JavaScript code outside of a browser. JavaScript is used primarily for client-side scripting, in which scripts written in JavaScript are embedded in a webpage’s HTML and run client-side by a JavaScript engine in the user’s web browser. Node.js lets developers use JavaScript to write command line tools and for server-side scripting—running scripts server-side to produce dynamic web page content before the page is sent to the user’s web browser. Consequently, Node.js represents a “JavaScript everywhere” paradigm, unifying web application development around a single programming language, rather than different languages for server side and client side scripts.

Though .js is the standard filename extension for JavaScript code, the name “Node.js” does not refer to a particular file in this context and is merely the name of the product. Node.js has an event-driven architecture capable of asynchronous I/O. These design choices aim to optimize throughput and scalability in web applications with many input/output operations, as well as for real-time Web applications (e.g., real-time communication programs and browser games). Read more…

The Document Object Model (DOM) is a cross-platform and language-independent application programming interface that treats an HTML, XHTML, or XML document as a tree structure wherein each node is an object representing a part of the document. The DOM represents a document with a logical tree. Each branch of the tree ends in a node, and each node contains objects. DOM methods allow programmatic access to the tree; with them one can change the structure, style or content of a document. Nodes can have event handlers attached to them. Once an event is triggered, the event handlers get executed.

The principal standardization of DOM was handled by the World Wide Web Consortium, which last developed a recommendation in 2004. WHATWG took over development of the standard, publishing it as a living document. The W3C now publishes stable snapshots of the WHATWG standard. Read more…

Haxe is a high-level cross-platform multi-paradigm programming language and compiler that can produce applications and source code, for many different computing platforms, from one code-base. It is free and open-source software, distributed under the GNU General Public License (GPL) version 2, and the standard library under the MIT License.

Haxe includes a set of common functions that are supported across all platforms, such as numeric data types, text, arrays, binary and some common file formats. Haxe also includes platform-specific application programming interface (API) for Adobe Flash, C++, PHP and other languages. OpenFL, Kha, Heaps and Flambe are popular Haxe frameworks that enable creating multi-platform content from one codebase. Read more…

An ECMAScript engine is a program that executes source code written in a version of the ECMAScript language standard, for example, JavaScript.

These are new generation ECMAScript engines for web browsers, all implementing just-in-time compilation (JIT) or variations of that idea. The performance benefits for just-in-time compilation make it much more suitable for web applications written in JavaScript. Read more…

CoffeeScript is a programming language that transcompiles to JavaScript. It adds syntactic sugar inspired by Ruby, Python and Haskell in an effort to enhance JavaScript’s brevity and readability. Specific additional features include list comprehension and pattern matching.

CoffeeScript support is included in Ruby on Rails version 3.1 and Play Framework. In 2011, Brendan Eich referenced CoffeeScript as an influence on his thoughts about the future of JavaScript. Read more…