TheSVGCircleElement interface is an interface for the <circle> element. The circle element is defined by the cx and cy attributes, that denote the coordinates of the centre of the circle. It also has a radius attribute r that denotes the radius of the circle. The radius value must be positive to allow the successful rendering of the element.
The TimeRanges interface is used to represent a set of time ranges, primarily for the purpose of tracking which portions of media have been buffered when loading it for use by the <audio> and <video> elements.
A WebSocket server is a TCP application listening on any port of a server that follows a specific protocol, simple as that. The task of creating a custom server tends to scare people; however, it can be easy to implement a simple WebSocket server on your platform of choice.
The XMLHttpRequest.send() method sends the request. If the request is asynchronous (which is the default), this method returns as soon as the request is sent. If the request is synchronous, this method doesn't return until the response has arrived. send() accepts an optional argument for the request body. If the request method is GET or HEAD, the argument is ignored and request body is set to null.
In HTML5, some HTML elements which provide support for CORS, such as <img> or <video>, have a crossorigin attribute (crossOrigin property), which lets you configure the CORS requests for the element's fetched data. These attributes are enumerated, and have the following possible values:
The :-moz-full-screen-ancestorCSSpseudo-class applies to all ancestors of the full-screen element, except containing frames in parent documents, which are the full-screen element in their own documents. However, those elements' ancestors have this class applied to them.
The :-moz-loadingCSSpseudo-class matches elements, which can't be displayed, because they have not started loading, such as images that haven't started to arrive yet. Note that images that are in the process of loading are not matched by this pseudo-class.
The :-moz-locale-dir(ltr)CSSpseudo-class matches an element if the user interface is being displayed left-to-right. This is determined by the preference intl.uidirection.locale (where locale is the current locale) being set to "ltr".