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JSX (JavaScript)
JSX (sometimes referred to as JavaScript XML) is an XML-like extension to the JavaScript language syntax. Initially created by Facebook for use with React, JSX has been adopted by multiple web frameworks. Being a syntactic sugar, JSX is generally transpiled into nested JavaScript function calls structurally similar to the original JSX. Markup An example of JSX code: const App = () => Nested elements Multiple elements on the same level need to be wrapped in a single React element such as the element shown above, a fragment delineated by or in its shorthand form , or returned as an array. Attributes JSX provides a range of element attributes designed to mirror those provided by HTML. Custom attributes can also be passed to the component. All attributes will be received by the component as props. JavaScript expressions JavaScript expressions (but not statements) can be used inside JSX with curly brackets : The example above will render: 11 Conditional expressions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JavaScript
JavaScript (), often abbreviated as JS, is a programming language and core technology of the World Wide Web, alongside HTML and CSS. Ninety-nine percent of websites use JavaScript on the client side for webpage behavior. Web browsers have a dedicated JavaScript engine that executes the client code. These engines are also utilized in some servers and a variety of apps. The most popular runtime system for non-browser usage is Node.js. 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 netwo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meta Platforms
Meta Platforms, Inc. is an American multinational technology company headquartered in Menlo Park, California. Meta owns and operates several prominent social media platforms and communication services, including Facebook, Instagram, Threads (social network), Threads, Facebook Messenger, Messenger and WhatsApp. The company also operates an advertising network for its own sites and third parties; , advertising accounted for 97.8 percent of its total revenue. The company was originally established in 2004 as TheFacebook, Inc., and was renamed Facebook, Inc. in 2005. In 2021, it rebranded as Meta Platforms, Inc. to reflect a strategic shift toward developing the metaverse—an interconnected digital ecosystem spanning virtual reality, virtual and augmented reality technologies. Meta is considered one of the Big Tech, Big Five American technology companies, alongside Alphabet Inc., Alphabet (Google), Amazon (company), Amazon, Apple Inc., Apple, and Microsoft. In 2023, it was rank ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
React (JavaScript Library)
React (also known as React.js or ReactJS) is a free and open-source front-end JavaScript library that aims to make building user interfaces based on components more "seamless". It is maintained by Meta (formerly Facebook) and a community of individual developers and companies. React can be used to develop single-page, mobile, or server-rendered applications with frameworks like Next.js and Remix. Because React is only concerned with the user interface and rendering components to the DOM, React applications often rely on libraries for routing and other client-side functionality. A key advantage of React is that it only re-renders those parts of the page that have changed, avoiding unnecessary re-rendering of unchanged DOM elements. Notable features Declarative React adheres to the declarative programming paradigm. Developers design views for each state of an application, and React updates and renders components when data changes. This is in contrast with imperative p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Web 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 i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Syntactic Sugar
In computer science, syntactic sugar is syntax within a programming language that is designed to make things easier to read or to express. It makes the language "sweeter" for human use: things can be expressed more clearly, more concisely, or in an alternative style that some may prefer. Syntactic sugar is usually a shorthand for a common operation that could also be expressed in an alternate, more verbose, form: The programmer has a choice of whether to use the shorter form or the longer form, but will usually use the shorter form since it is shorter and easier to type and read. For example, many programming languages provide special syntax for referencing and updating array elements. Abstractly, an array reference is a procedure of two arguments: an array and a subscript vector, which could be expressed as get_array(Array, vector(i,j)). Instead, many languages provide syntax such as Array ,j/code>. Similarly an array element update is a procedure consisting of three arguments, fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transpiler
A source-to-source translator, source-to-source compiler (S2S compiler), transcompiler, or transpiler is a type of translator that takes the source code of a program written in a programming language as its input and produces an equivalent source code in the same or a different programming language, usually as an intermediate representation. A source-to-source translator converts between programming languages that operate at approximately the same level of abstraction, while a traditional compiler translates from a higher level language to a lower level language. For example, a source-to-source translator may perform a translation of a program from Python to JavaScript, while a traditional compiler translates from a language like C to assembly or Java to bytecode. An automatic parallelizing compiler will frequently take in a high level language program as an input and then transform the code and annotate it with parallel code annotations (e.g., OpenMP) or language construct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Expression (computer Science)
In computer science, an expression is a Syntax (programming languages), syntactic entity in a programming language that may be evaluated to determine its value (computer science), value. It is a combination of one or more Constant (programming), constants, variable (programming), variables, function (programming), functions, and operator (programming), operators that the programming language interprets (according to its particular Order of operations, rules of precedence and of Associative property, association) and computes to produce ("to return", in a state (computer science), stateful environment) another value. This process, for mathematical expressions, is called ''evaluation''. In simple settings, the return type, resulting value is usually one of various primitive data type, primitive types, such as string (computer science), string, boolean expression, boolean, or numerical (such as integer (computer science), integer, floating-point number, floating-point, or complex data t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Statement (computer Science)
In computer programming, a statement is a syntactic unit of an imperative programming language that expresses some action to be carried out. A program written in such a language is formed by a sequence of one or more statements. A statement may have internal components (e.g. expressions). Many programming languages (e.g. Ada, Algol 60, C, Java, Pascal) make a distinction between statements and definitions/declarations. A definition or declaration specifies the data on which a program is to operate, while a statement specifies the actions to be taken with that data. Statements which cannot contain other statements are ''simple''; those which can contain other statements are ''compound''. The appearance of a statement (and indeed a program) is determined by its syntax or grammar. The meaning of a statement is determined by its semantics. Simple statements Simple statements are complete in themselves; these include assignments, subroutine calls, and a few statements which m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conditional (computer Programming)
In computer science, conditionals (that is, conditional statements, conditional expressions and conditional constructs) are programming language constructs that perform different computations or actions or return different values depending on the value of a Boolean expression, called a ''condition''. Conditionals are typically implemented by selectively executing instructions. Although dynamic dispatch is not usually classified as a conditional construct, it is another way to select between alternatives at runtime. Terminology Conditional statements are imperative constructs executed for side-effect, while conditional expressions return values. Many programming languages (such as C) have distinct conditional statements and conditional expressions. Although in pure functional programming, conditional expressions do not have side-effects, many languages with conditional expressions (such as Lisp) support conditional side-effects. If–then(–else) The if–then or if ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Babel (compiler)
Babel is a free and open-source JavaScript transcompiler that is mainly used to convert ECMAScript 2015+ (ES6+) code into backwards-compatible JavaScript code that can be run by older JavaScript engines. It allows web developers to take advantage of the newest features of the language. Developers can use new JavaScript language features by using Babel to convert their source code into versions of JavaScript that a Web browser can process. Babel can also be used to compile TypeScript into JavaScript. The core version of Babel was downloaded 5 million times a month in 2016, and this increased to 16 million times a week in 2019. Babel plugins transform syntax that is not widely supported into a backward-compatible version. For example, arrow functions, which are specified in ES6, are converted into regular function declarations. Non-standard JavaScript syntax such as JSX can also be transformed. Babel can automatically inject polyfills provided by core-js for support features ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Software Build
A software build is the process of converting source code files into standalone artifact (software development), software artifact(s) that can be run on a computer, or the result of doing so. In software production, builds optimize software for performance and distribution, packaging into formats such as '.''exe'; '.deb'; '.apk. The build process often employs specialized tools such as CMake, Make, or Gradle, and integrates with automation systems including Jenkins (software), Jenkins or Git Actions. Despite advancements, challenges such as dependency conflicts, platform compatibility, and long compile times, remain problems. Software development In software development, building software is an end-to-end process that involves many distinct functions. Some of these functions are described below. Version control The version control function carries out activities such as workspace creation and updating, baselining and reporting. It creates an environment for the build process ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Software Deployment
Software deployment is all of the activities that make a software system available for use. Deployment can involve activities on the producer (software developer) side or on the consumer ( user) side or both. Deployment to consumers is a hard task because the target systems are diverse and unpredictable. Software as a service avoids these difficulties by deploying only to dedicated servers that are typically under the producer's control. Because every software system is unique, the precise processes or procedures within each activity can hardly be defined. Therefore, "deployment" should be interpreted as a ''general process'' that has to be customized according to specific requirements or characteristics. History When computers were extremely large, expensive, and bulky (mainframes and minicomputers), the software was often bundled together with the hardware by manufacturers. If business software needed to be installed on an existing computer, this might require an expens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
