This event handler is called when an offline is fired on body and bubbles up, when navigator.onLine property changes and becomes false.
This method is called whenever an event occurs of the type for which the EventListener interface was registered.
The MediaKeySystemConfiguration interface EncryptedMediaExtensions API provides configuration information about the media key system.
A MutationRecord represents an individual DOM mutation. It is the object that is passed to MutationObserver's callback.
The High Resolution Time standard defines a Performance interface that supports client-side latency measurements within applications. The Performance interfaces are considered high resolution because they are accurate to a thousandth of a millisecond (subject to hardware or software constraints). The interfaces support a number of use cases including calculating frame-rates (potentially important in animations) and benchmarking (such as the time to load a resource).
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.
Width (in pixels) of the browser window viewport including, if rendered, the vertical scrollbar.
Window.outerWidth gets the width of the outside of the browser window. It represents the width of the whole browser window including sidebar (if expanded), window chrome and window resizing borders/handles.
This method is currently not working, but you can use:
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.
XMLHttpRequestEventTarget is the interface that describes the event handlers you can implement in an object that will handle events for an XMLHttpRequest.
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 HTML <element> element is used to define new custom DOM elements.
The ::-moz-page CSS pseudo-element applies to an individual page in print or print preview.