Ext JS

Ext JS
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Name	Ext JS
Developer	Sencha
Released	2007
Programming language	JavaScript
Operating system	Cross-platform
Genre	JavaScript framework

Ext JS is a commercial JavaScript application framework designed for building interactive web applications and user interfaces. It provides a component-based library, data package, layout managers, and tooling for producing rich client-side applications that target desktop and mobile browsers. The framework has been used across corporate, government, and enterprise environments and has intersected with numerous web standards and tooling projects.

Overview

Ext JS offers a comprehensive component set including grids, forms, charts, trees, and rich data stores that integrate with server-side technologies. It competes and interrelates with frameworks and libraries such as jQuery, React, Angular, Vue.js, Backbone.js, Ember.js, Dojo Toolkit, Prototype, MooTools, Knockout.js, Polymer, Inferno, Svelte, Aurelia, Meteor, Next.js, Nuxt.js, Gatsby, Ionic, PhoneGap, and Apache Cordova. The project connects to build tools and package managers such as npm, Yarn, Webpack, Rollup, Babel, Grunt, Gulp, Browserify, and ESLint, and integrates with testing suites like Jasmine, Mocha, Karma, and Selenium.

History and Development

The codebase originated in the mid-2000s amid a wave of client-side rich internet application efforts contemporaneous with Adobe Flash, Microsoft Silverlight, Google Gears, and the rise of AJAX. Development company Sencha (formerly Ext) evolved the product alongside corporate trends exemplified by Oracle Corporation, IBM, SAP SE, Microsoft Corporation, Salesforce, Red Hat, HP Inc., Dell Technologies, Cisco Systems, Intel Corporation, Amazon, Google, Facebook, Twitter, LinkedIn, eBay, Adobe Inc., Autodesk, Siemens, Schneider Electric, and Siemens AG. Major architectural shifts reflected influences from standards initiatives like ECMAScript, ECMAScript 2015, HTML5, CSS3, Web Components, Service Worker, and WebAssembly.

Contributors and decision-makers included engineers and executives who previously worked at startups and established firms such as Mozilla Corporation, Netscape Communications Corporation, Yahoo!, AOL, Oracle Corporation, and university labs like MIT, Stanford University, University of California, Berkeley, and Carnegie Mellon University. Legal and business developments involved interactions with licensing practices observed at Red Hat, Canonical, JetBrains, and open-source projects hosted on GitHub and SourceForge.

Architecture and Components

The framework centers on a class system, event-driven architecture, and MVC/MVVM patterns that parallel designs in Model–view–controller, Model–view–viewmodel, and ideas seen in Smalltalk and Eiffel environments. Core parts include a data package with stores and proxies, UI widgets (grids, trees, forms), layout managers, and charting modules influenced by visualization work from D3.js, Highcharts, Chart.js, and Google Charts. Interoperability with server platforms is common: Java application servers such as Apache Tomcat, GlassFish, Oracle WebLogic Server, and JBoss; Node.js backends; ASP.NET and PHP stacks; and integration with middleware like Apache HTTP Server, Nginx, Tomcat, WildFly, and Spring Framework.

Tooling includes a command-line SDK and an IDE integration story with Visual Studio Code, JetBrains WebStorm, Eclipse, NetBeans, and IntelliJ IDEA. The component architecture uses CSS and theming approaches that relate to Bootstrap, Foundation, and Semantic UI.

Licensing and Editions

Sencha has offered multiple licensing models and edition tiers aimed at enterprise customers, paralleling commercial strategies from Oracle Corporation, Microsoft Corporation, IBM, Red Hat, SUSE, Perforce Software, and Atlassian. Distribution and licensing discussions have resembled debates around dual-licensing used by projects like MySQL, Qt, and MongoDB. Licensing complexities affected adoption in organizations familiar with GNU General Public License, MIT License, Apache License, Creative Commons, and proprietary enterprise license agreements. Packaging and deployment systems worked with containerization and orchestration technologies including Docker and Kubernetes.

Adoption and Use Cases

Ext JS has been used in internal business applications, dashboards, management consoles, and data-intensive tools by sectors such as finance, telecommunications, healthcare, government agencies, and manufacturing. Implementations often interfaced with enterprise systems from Oracle Corporation, SAP SE, Salesforce, Siebel Systems, PeopleSoft, Workday, Epic Systems Corporation, Cerner Corporation, Siemens Healthineers, and Philips. Example application types include trading platforms, network management consoles, customer relationship management front ends, and interactive reporting tools that worked alongside analytics frameworks like Apache Hadoop, Apache Spark, Tableau, Power BI, and QlikView.

Training, certification, and consulting around the framework were provided by firms comparable to Accenture, Deloitte, Capgemini, Infosys, Wipro, Tata Consultancy Services, Cognizant, and IBM Global Services.

Criticism and Controversies

Critics pointed to licensing restrictions, the framework's size, and a steep learning curve relative to lighter-weight libraries such as jQuery, React, and Vue.js. Debates echoed earlier controversies in projects like MongoDB over license changes and proprietary enclaves in open-source ecosystems. Performance and mobile suitability were compared unfavorably to frameworks engineered for mobile-first workflows such as Ionic and React Native. Community tension involved maintainability and ecosystem fragmentation akin to disputes seen around AngularJS migration paths and Backbone.js decline. Security audits and vulnerability management paralleled processes used by OWASP and vendors responding to advisories from US-CERT and national computer emergency response teams.

Category:JavaScript libraries