The HTMLTableElement.insertRow() method inserts a new row in the table.

API HTML DOM HTMLTableElement Method NeedsMobileBrowserCompatibility Reference

The MouseEvent.x property is an alias for the MouseEvent.clientX property.

API DOM NeedsBrowserCompatibility NeedsCompatTable NeedsMobileBrowserCompatibility Property Reference

API DOM NeedsBrowserCompatibility NeedsCompatTable NeedsMobileBrowserCompatibility Property Reference

The Node.localName read-only property returns the local part of the qualified name of this node.

API DOM NeedsBrowserCompatibility NeedsMobileBrowserCompatibility Obsolete Property

The Node.namespaceURI read-only property returns the namespace URI of the node, or null if the node is not in a namespace. When the node is a document, it returns the XML namespace for the current document.

API DOM NeedsBrowserCompatibility NeedsMobileBrowserCompatibility Obsolete Property Reference

The Node.prefix read-only property returns the namespace prefix of the specified node, or null if no prefix is specified.

API DOM NeedsBrowserCompatibility NeedsMobileBrowserCompatibility Obsolete Property

Returns a Selection object representing the range of text selected by the user or the current position of the caret.

API DOM Method NeedsMobileBrowserCompatibility Reference Window

CSS CSS Pseudo-element Layout NeedsMobileBrowserCompatibility Reference Web

The ::first-letter CSS pseudo-element selects the first letter of the first line of a block, if it is not preceded by any other content (such as images or inline tables) on its line.

CSS CSS Pseudo-element Layout NeedsMobileBrowserCompatibility Reference Web

The ::first-line CSS pseudo-element applies styles only to the first line of an element. The amount of the text on the first line depends of numerous factors, like the width of the element, width of the document, and the font size of the text. As all pseudo-elements, ::first-line does not match any real HTML element.

CSS CSS Pseudo-element Layout NeedsMobileBrowserCompatibility Reference Référence Web

The ::-moz-page-sequence CSS pseudo-element represents the background of the print preview.

CSS CSS Reference NeedsBrowserCompatibility NeedsExample NeedsMobileBrowserCompatibility Non-standard Pseudo-element

CSS CSS Reference NeedsBrowserCompatibility NeedsContent NeedsExample NeedsMobileBrowserCompatibility Non-standard

The :default CSS pseudo-class represents any user interface element that is the default among a group of similar elements.

CSS CSS Pseudo-class Layout NeedsMobileBrowserCompatibility Reference Web

The :first @page CSS pseudo-class describes the styling of the first page when printing a document.

CSS CSS Pseudo-class Layout NeedsMobileBrowserCompatibility Reference Web

The :hover CSS pseudo-class matches when the user designates an element with a pointing device, but does not necessarily activate it. This style may be overridden by any other link-related pseudo-classes, that is :link, :visited, and :active, appearing in subsequent rules. In order to style appropriately links, you need to put the :hover rule after the :link and :visited rules but before the :active one, as defined by the LVHA-order: :link — :visited — :hover — :active.

CSS CSS Pseudo-class Layout NeedsMobileBrowserCompatibility Reference Référence Web

The :invalid CSS pseudo-class represents any <input> or <form> element whose content fails to validate according to the input's type setting. This allows you to easily have invalid fields adopt an appearance that helps the user identify and correct errors.

CSS CSS Pseudo-class Layout NeedsMobileBrowserCompatibility Reference Web

The :left CSS page pseudo-class matches any left page when printing a page. It allows to describe the styling of left-side pages.

CSS CSS Pseudo-class Layout NeedsMobileBrowserCompatibility Reference Web

The :-moz-system-metric(windows-default-theme) CSS pseudo-class matches an element if the user is currently using one of the following themes in Windows: Luna, Royale, Zune, or Aero (i.e., Vista Basic, Vista Standard, or Aero Glass). This will exclude Windows Classic themes as well as third-party themes.

CSS CSS Pseudo-class CSS Reference NeedsMobileBrowserCompatibility Non-standard

The :-moz-ui-invalid CSS pseudo-class represents any validated form element whose value isn't valid based on their validation constraints, in certain circumstances. This pseudo-class is applied according to the following rules:

CSS CSS Reference NeedsExample NeedsMobileBrowserCompatibility Non-standard Pseudo-class

The :-moz-ui-valid CSS pseudo-class represents any validated form element whose value validates correctly based on its validation constraints.

CSS CSS Pseudo-class CSS Reference NeedsExample NeedsMobileBrowserCompatibility Non-standard