The Element.scrollWidth read–only property returns either the width in pixels of the content of an element or the width of the element itself, whichever is greater. If the element is wider than its content area (for example, if there are scroll bars for scrolling through the content), the scrollWidth is larger than the clientWidth.
HTMLDocument is an abstract interface of the DOM which provides access to special properties and methods not present by default on a regular (XML) document.
The HTMLFormElement.acceptCharset property represents a list of the supported character encodings for the given FORM element. This list can be comma- or space-separated.
Constructor for creating an HTMLOptionElement. The Option constructor is from the very early days of DOM scripting and has non–standard syntax, but has ubiquitous support in browsers.
HTMLOptionsCollection is an interface representing a collection of HTML option elements (in document order) and offers methods and properties for traversing the list as well as optionally altering its items. This type is returned solely by the "options" property of select.