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For example, if rolling the mouse over a 'Buy now' link is meant to make the price, elsewhere on the page, become emphasized, JavaScript code can do this, but JavaScript needs to identify the price element, wherever it is in the markup.
When a web page is loaded, the browser creates a Document Object Model of the page, which is an object oriented representation of an HTML document that acts as an interface between JavaScript and the document itself. This allows the creation of dynamic web pages, [13] because within a page JavaScript can:
The id attribute provides a document-wide unique identifier for an element. [ 7 ] [ 8 ] [ 9 ] This can be used as CSS selector to provide presentational properties, by browsers to focus attention on the specific element, or by scripts to alter the contents or presentation of an element.
The combination of HTML, CSS, and JavaScript offers ways to: Animate text and images in their document. Embed a ticker or other dynamic display that automatically refreshes its content with the latest news, stock quotes, or other data.
The central principle of D3.js design is to enable the programmer to first use a CSS-style selector to select a given set of Document Object Model (DOM) nodes, then use operators to manipulate them in a similar manner to jQuery. [8]
Vue was created by Evan You after working for Google using AngularJS in several projects. He later summed up his thought process: "I figured, what if I could just extract the part that I really liked about Angular and build something really lightweight."
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id Description in CSS/JS in HTML about Part of the interface (footer). allmessagestable Table with a list of system messages available in the MediaWiki: namespace. monobook/main.css: Special:Allmessages: article Main content area for standard-derived skins. Everything on MediaWiki:Common.css must have any effect only within the element with ...