Blocks of JS code that run on command and ‘statements’, which are instructions that are executed by the browser. All of the ‘code’ in JS is a string of statements that are executed in order.
SpiderMonkey: Mozilla Firefox
Chakra: IE, Edge
AngularJS A robust, oriented towards desktop apps and apt for data-heavy sites, the AngularJS framework provides a much needed module-based structure for building complicated applications easily
Backbone.js Lightweight JS framework that’s a ‘pared-down’ alternative to full-featured frameworks.
Ember.js Lightweight JS framework Ember has been used by sites to increase site performance. Ember is equipped with a built-in data module and template engine.
Meteor JS Open-source, real-time framework, built on top of Node.js and works closely with MongoDB.
Koa.js Next-generation framework for Node.js following in the footsteps of Express.js.
Prototype Framework with a built-in API making common JS tasks streamlined to code.
MooTools A JS framework with an API which streamlines common tasks and which includes effects and animation.
React Native A mobile library used to build a natively rendered user interface for mobile applications.
Macromedia released HomeSite 5, an HTML and JS based editor that helps in the effective management of personal websites.