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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.
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.
The jQuery function is a factory for creating a jQuery object that represents one or more DOM nodes. jQuery objects have methods to manipulate these nodes. These methods (sometimes called commands), are chainable as each method also returns a jQuery object. Access to and manipulation of multiple DOM nodes in jQuery typically begins with calling ...
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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
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 ).
JavaScript library. 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.
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 ...