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Jest (JavaScript Framework)
Jest is a JavaScript testing framework built on top of Jasmine and maintained by Meta (formerly Facebook). It was designed and built by Christoph Nakazawa with a focus on simplicity and support for large web applications. It works with projects using Babel, TypeScript, Node.js, React, Angular, Vue.js and Svelte. Jest doesn't require a lot of configuration for first-time users of a testing framework. Usage and examples Installation Use the JavaScript package manager npm to install Jest in Node.js: $ npm install --save-dev jest Example In this example, we will write a test case for the following module saved as sum.js: function sum(a, b) module.exports = sum; Our test case will be in a file named sum.test.js for Jest to automatically pick it up as a test case for sum.js. The contents of the file with the test case will be: const sum = require('./sum'); test('adds 1 + 2 to equal 3', () => ); Then, from the command line, we run this command: $ npm run test ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JavaScript
JavaScript (), often abbreviated as JS, is a programming language that is one of the core technologies of the World Wide Web, alongside HTML and CSS. As of 2022, 98% of Website, websites use JavaScript on the Client (computing), client side for Web page, webpage behavior, often incorporating third-party Library (computing), libraries. All major Web browser, web browsers have a dedicated JavaScript engine to execute the Source code, code on User (computing), users' devices. JavaScript is a High-level programming language, high-level, often Just-in-time compilation, just-in-time compiled language that conforms to the ECMAScript standard. It has dynamic typing, Prototype-based programming, prototype-based object-oriented programming, object-orientation, and first-class functions. It is Programming paradigm, multi-paradigm, supporting Event-driven programming, event-driven, functional programming, functional, and imperative programming, imperative programming paradigm, programmin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Npm (software)
npm ( originally short for Node Package Manager) is a package manager for the JavaScript programming language maintained by npm, Inc. npm is the default package manager for the JavaScript runtime environment Node.js. It consists of a command line client, also called npm, and an online database of public and paid-for private packages, called the npm registry. The registry is accessed via the client, and the available packages can be browsed and searched via the npm website. The package manager and the registry are managed by npm, Inc. Acronym npm is officially a "recursive bacronymic abbreviation for 'npm is not a package manager. However, the initial commit of npm referred to it as the "Node Package Manager". The expansion of the name was changed in 2014. History npm is written entirely in JavaScript and was developed by Isaac Z. Schlueter as a result of having "seen module packaging done terribly" and with inspiration from other similar projects such as PEAR (PHP) an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JavaScript Programming Tools
JavaScript (), often abbreviated as JS, is a programming language that is one of the core technologies of the World Wide Web, alongside HTML and CSS. As of 2022, 98% of websites use JavaScript on the client side for webpage behavior, often incorporating third-party libraries. All major web browsers have a dedicated JavaScript engine to execute the code on users' devices. JavaScript is a high-level, often just-in-time compiled language that conforms to the ECMAScript standard. It has dynamic typing, prototype-based object-orientation, and first-class functions. It is multi-paradigm, supporting event-driven, functional, and imperative programming styles. It has application programming interfaces (APIs) for working with text, dates, regular expressions, standard data structures, and the Document Object Model (DOM). The ECMAScript standard does not include any input/output (I/O), such as networking, storage, or graphics facilities. In practice, the web browser or other ru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JavaScript Libraries
A JavaScript library is a library of pre-written JavaScript code that allows for easier development of JavaScript-based applications, especially for AJAX and other web-centric technologies. Libraries With the expanded demands for JavaScript, an easier means for programmers to develop such dynamic interfaces was needed. Thus, JavaScript libraries and JavaScript widget libraries were developed, allowing for developers to concentrate more upon more distinctive applications of Ajax. This has led to other companies and groups, such as Microsoft and Yahoo! developing their own JavaScript-based user interface libraries, which find their way into the web applications developed by these companies. Some JavaScript libraries allow for easier integration of JavaScript with other web development technologies, such as CSS, PHP, Ruby, and Java. While others provide utilities, often in the form of JavaScript functions, to make repetitive and complex tasks less taxing. Many libraries include code t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JavaScript Library
A JavaScript library is a library of pre-written JavaScript code that allows for easier development of JavaScript-based applications, especially for AJAX and other web-centric technologies. Libraries With the expanded demands for JavaScript, an easier means for programmers to develop such dynamic interfaces was needed. Thus, JavaScript libraries and JavaScript widget libraries were developed, allowing for developers to concentrate more upon more distinctive applications of Ajax. This has led to other companies and groups, such as Microsoft and Yahoo! developing their own JavaScript-based user interface libraries, which find their way into the web applications developed by these companies. Some JavaScript libraries allow for easier integration of JavaScript with other web development technologies, such as CSS, PHP, Ruby, and Java. While others provide utilities, often in the form of JavaScript functions, to make repetitive and complex tasks less taxing. Many libraries include code t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JavaScript Framework
A web framework (WF) or web application framework (WAF) is a software framework that is designed to support the development of web applications including web services, web resources, and web APIs. Web frameworks provide a standard way to build and deploy web applications on the World Wide Web. Web frameworks aim to automate the overhead associated with common activities performed in web development. For example, many web frameworks provide libraries for database access, templating frameworks, and session management, and they often promote code reuse. Although they often target development of dynamic web sites, they are also applicable to static websites. History As the design of the World Wide Web was not inherently dynamic, early hypertext consisted of hand-coded HTML text files that were published on web servers. Any modifications to published pages needed to be performed by the pages' author. In 1993, the Common Gateway Interface (CGI) standard was introduced for interfacin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unit
Unit may refer to: Arts and entertainment * UNIT, a fictional military organization in the science fiction television series ''Doctor Who'' * Unit of action, a discrete piece of action (or beat) in a theatrical presentation Music * ''Unit'' (album), 1997 album by the Australian band Regurgitator * The Units, a synthpunk band Television * ''The Unit'', an American television series * '' The Unit: Idol Rebooting Project'', South Korean reality TV survival show Business * Stock keeping unit, a discrete inventory management construct * Strategic business unit, a profit center which focuses on product offering and market segment * Unit of account, a monetary unit of measurement * Unit coin, a small coin or medallion (usually military), bearing an organization's insignia or emblem * Work unit, the name given to a place of employment in the People's Republic of China Science and technology Science and medicine * Unit, a vessel or section of a chemical plant * Blood unit, a measureme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
QUnit
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. History John Resig originally developed QUnit as part of jQuery. In 2008 it was extracted from the jQuery unit test code to form its project and became known as "QUnit". This allowed others to start using it for writing their unit tests. While the initial version of QUnit used jQuery for interaction with the DOM, a rewrite in 2009 made QUnit completely standalone. Usage and examples * QUnit.module(string) - Defines a module, a grouping of one or more tests. * QUnit.test(string, function) - Defines a test. QUnit uses a set of assertion method to provide semantic meaning in unit tests: * ass ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mocha (JavaScript Framework)
Mocha is a JavaScript test framework for Node.js programs, featuring browser support, asynchronous testing, test coverage reports, and use of any assertion library. Assertion Libraries Mocha can be used with most JavaScript assertion libraries, including: * should.js * express.js * chai * better-assert * unexpected Usage and examples $ npm install -g mocha $ mkdir test $ $EDITOR test/test.js # or open with your favorite editor var assert = require("assert") describe('Foo', function()) $ mocha . 1 test complete (1ms) For asynchronous testing, invoke the callback, and Mocha will wait for completion. describe('Foo', function()) See also * Jasmine * List of unit testing frameworks * npm * QUnit * Unit.js * Jest *JavaScript framework *JavaScript library A JavaScript library is a library of pre-written JavaScript code that allows for easier development of JavaScript-based applications, especially for AJAX and other web-centric technologies. Libraries With the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jasmine (JavaScript Framework)
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. History The developers at Pivotal Labs for Jasmine previously developed a similar unit testing framework called JsUnit before active development of Jasmine. Features * Supports asynchronous testing. * Makes use of 'spies' for implementing test doubles. * Supports testing of front-end code through a front-end extension of Jasmine called Jasmine-jQuery. Usage Jasmine aims to be easy to read. A simple hello world test looks like the code below, where describe() describes a suite of tests and it() is an individual test specification. The name "it()" follows the idea of behavior-driven development and serves as the first word in the test name, which should be a complete sentence. Usage ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Unit Testing Frameworks
This article is a list of tables of code-driven unit testing frameworks for various programming languages. Some, but not all, of these are based on xUnit. Columns (classification) * Name: This column contains the name of the framework and will usually link to it. * xUnit: This column indicates whether a framework should be considered of xUnit type. * TAP: This column indicates whether a framework can emit TAP output for TAP-compliant testing harnesses. * SubUnit: This column indicates whether a framework can emit SubUnit output. * Generators: Indicates whether a framework supports data generators. Data generators generate input data for a test and the test is run for each input data that the generator produces. * Fixtures: Indicates whether a framework supports test-local fixtures. Test-local fixtures ensure a specified environment for a single test. * Group fixtures: Indicates whether a framework supports group fixtures. Group fixtures ensure a specified environment for a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Svelte
Svelte is a free and open-source front end component framework or language created by Rich Harris and maintained by the Svelte core team members. Svelte is not a monolithic JavaScript library imported by applications: instead, Svelte compiles HTML templates to specialized code that manipulates the DOM directly, which may reduce the size of transferred files and give better client performance. Application code is also processed by the compiler, inserting calls to automatically recompute data and re-render UI elements when the data they depend on is modified. This also avoids the overhead associated with runtime intermediate representations, such as virtual DOM, unlike traditional frameworks (such as React and Vue) which carry out the bulk of their work at runtime, ''i.e'' in the browser. The compiler itself is written in TypeScript. Its source code is licensed under MIT License and hosted on GitHub. History The predecessor of Svelte is Ractive.js, which Rich Harris had develo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |