IndexedDB is a low-level API for client-side storage of significant amounts of structured data, including files/blobs. This API uses indexes to enable high-performance searches of this data. While Web Storage is useful for storing smaller...
A CSS pseudo-class is a keyword added to a selector that lets you style a specific state of the selected element(s). For example, the pseudo-class :hover can be used to select a button when a user's pointer hovers over the button and this selected button can then be styled.
The <easing-function> CSS data type represents a mathematical function that describes the rate at which a value changes.
The size and position of an element are often impacted by its containing block. Most often, the containing block is the content area of an element's nearest block-level ancestor, but this is not always the case. In this article, we examine the factors that determine an element's containing block.
An important aspect of custom elements is encapsulation, because a custom element, by definition, is a piece of reusable functionality: it might be dropped into any web page and be expected to work. So it's important that code running in...
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Extensions that use WebExtension APIs are provided with several user interface options so that their functionality can be made available to the user. A summary of those options is provided below, with a more detailed introduction to each user interface option in this section.
An extension adds features and functions to a browser. It's created using familiar web-based technologies — HTML, CSS, and JavaScript. It can take advantage of the same web APIs as JavaScript on a web page, but an extension also has access...
Tabs let a user open several web pages in their browser window and then switch between those web pages. With the Tabs API, you can work with and manipulate these tabs to create utilities that provide users with new ways to work with tabs or to deliver the features of your extension.
The flex-grow CSS property sets the flex grow factor, which specifies how much of the flex container's positive free space, if any, should be assigned to the flex item's main size.