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JavaScript (/ ˈ dʒ ɑː v ə s k r ɪ p t /), often abbreviated as JS, is a programming language and core technology of the Web, alongside HTML and CSS. 99% of websites use JavaScript on the client side for webpage behavior. [10] Web browsers have a dedicated JavaScript engine that executes the client code.
mixed mode: PHP + HTML + JavaScript + CSS, single-mode: PHP, Javascript, CSS, XML; extensible Hundreds of languages Syntax checking HTML, CSS, JavaScript (using JSHint) Some No JavaScript (using JSLint) No No HTML, JavaScript (using JSLint) HTML, CSS, JavaScript, TypeScript Tab support Yes Yes Yes Yes Some Yes Yes Yes Indent, new line keeps level
JavaScript is an event-based imperative programming language (as opposed to HTML's declarative language model) that is used to transform a static HTML page into a dynamic interface. JavaScript code can use the Document Object Model (DOM), provided by the HTML standard, to manipulate a web page in response to events, like user input.
Dynamic HTML, or DHTML, is a term which was used by some browser vendors to describe the combination of HTML, style sheets and client-side scripts (JavaScript, VBScript, or any other supported scripts) that enabled the creation of interactive and animated documents.
JavaScript + HTML Ember.js: 1.7.0 19 Aug 2014: 95 kB (minified & gzipped), 340 kB (minified), 1.5 MB (uncompressed) MIT: JavaScript Enyo: 2.0.1 30 Aug 2012 <25 kB (core gzipped) Apache 2 [2] JavaScript Ext JS: 7.3 15 Sept, 2020 84–502 kB: GPL & Commercial [3] JavaScript Google Web Toolkit: 2.10.0 June 2022: Variable Apache: Java jQuery ...
The difference between < br /> and < p > is that < br /> breaks a line without altering the semantic structure of the page, whereas < p > sections the page into paragraphs. The element < br /> is an empty element in that, although it may have attributes, it can take no content and it may not have an end tag. <
A JavaScript library is a library of pre-written JavaScript code that allows for easier development of JavaScript-based applications, [1] especially for AJAX and other web-centric technologies. [2] They can be included in a website by embedding it directly in the HTML via a script tag.
JavaScript was released by Netscape Communications in 1995 within Netscape Navigator 2.0. Netscape's competitor, Microsoft, released Internet Explorer 3.0 the following year with a reimplementation of JavaScript called JScript. JavaScript and JScript let web developers create web pages with client-side interactivity.