The SharedWorker() constructor creates a SharedWorker object that executes the script at the specified URL. This script must obey the same-origin policy.
The SpeechSynthesisUtterance() constructor of the SpeechSynthesisUtterance interface returns a new SpeechSynthesisUtterance object instance.
The TextEncoder() constructor returns a newly created TextEncoder object for the encoding specified in parameter.
JavaScript is designed on a simple object-based paradigm. An object is a collection of properties, and a property is an association between a name (or key) and a value. A property's value can be a function, in which case the property is known as a method. In addition to objects that are predefined in the browser, you can define your own objects. This chapter describes how to use objects, properties, functions, and methods, and how to create your own objects.
Accepts two optional parameters: Image([unsigned long width, unsigned long height])
The MediaSource() constructor of the MediaSource interface constructs and returns a new MediaSource object with no associated source buffers.