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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.
To cancel the event if it is cancelable, meaning that any default action normally taken by the implementation as a result of the event will not occur. initEvent DOMString eventTypeArg Specifies the event type. boolean canBubbleArg Specifies whether or not the event can bubble. boolean cancelableArg
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.
jQuery is a JavaScript library designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animations, and Ajax. [ 3] It is free, open-source software using the permissive MIT License. [ 4] As of August 2022, jQuery is used by 77% of the 10 million most popular websites. [ 5]
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The syntax of JavaScript is the set of rules that define a correctly structured JavaScript program. The examples below make use of the log function of the console object present in most browsers for standard text output . The JavaScript standard library lacks an official standard text output function (with the exception of document.write ).
React (JavaScript library) React (also known as React.js or ReactJS) is a free and open-source front-end JavaScript library [ 4][ 5] for building user interfaces based on components by Facebook Inc. It is maintained by Meta (formerly Facebook) and a community of individual developers and companies. [ 6][ 7][ 8]
Web development is the work involved in developing a website for the Internet ( World Wide Web) or an intranet (a private network). [ 1] Web development can range from developing a simple single static page of plain text to complex web applications, electronic businesses, and social network services. A more comprehensive list of tasks to which ...