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Mapping between HTML5 and JavaScript features and Content Security Policy controls. If the Content-Security-Policy header is present in the server response, a compliant client enforces the declarative allowlist policy. One example goal of a policy is a stricter execution mode for JavaScript in order to prevent certain cross-site scripting attacks.
Cross-origin resource sharing (CORS) is a mechanism to safely bypass the same-origin policy, that is, it allows a web page to access restricted resources from a server on a domain different than the domain that served the web page. A web page may freely embed cross-origin images, stylesheets, scripts, iframes, and videos.
CSS-in-JS is a styling technique by which JavaScript is used to style components. When this JavaScript is parsed, CSS is generated (usually as a <style> element) and attached into the DOM . It enables the abstraction of CSS to the component level itself, using JavaScript to describe styles in a declarative and maintainable way.
Learn how to enable JavaScript in your browser to access additional AOL features and content.
The browser typically interacts with the servers via hyper text transfer protocol (HTTP) and WebSocket connections to deliver a web app. [note 1] To make the web app interactive, the browser also renders HTML and CSS, and executes JavaScript code provided by the web app.
[10] [12] A classic example of a potential vector is a site search engine: if one searches for a string, the search string will typically be redisplayed verbatim on the result page to indicate what was searched for. If this response does not properly escape or reject HTML control characters, a cross-site scripting flaw will ensue. [13]
Non-displayed links do not work (as opposed to links in a very small font). It cannot be used to remove text in expressions for template names, parameter names, parameter values, page names in links, etc. To view hidden text, download the Web Developer Toolbar for Firefox here, then choose Misc. → show hidden elements in that toolbar. It will ...
This is done through custom Cascading Style Sheets stored in subpages of the user's "User" page. E.g. To create your own CSS modifications for the skin you are presently using, create a page at Special:MyPage/skin.css containing the CSS you want to use (to apply your changes regardless which skin you are using, put them in Special:MyPage/common ...