ReasonJun

IndexedDB is a powerful API provided by web browsers for managing a local NoSQL database within client-side applications. Here's a detailed breakdown of its key features and functionalities: Purpose: Persistently store large amounts of structured data in the user's browser, enabling offline-capable web applications. Offer rich query capabilities for efficient data retrieval based on indexes. Key..

An iframe (short for inline frame) is an HTML element that allows you to embed another HTML document within the current document. It provides a way to display content from another source or website within your own web page. The content within the iframe is independent and can come from a different domain. Here are some key points about iframes: Embedding Content: The primary purpose of an iframe..

In HTML, the element is used to embed and display videos on a web page. The element provides a native way to play video content without relying on third-party plugins or players. It supports various video formats and offers several attributes and methods to control video playback and appearance. Here's an example of how to use the element: Your browser does not support the video tag. In this exa..

img => The web page may not load the image immediately, but only when the user triggers an event to view the image. => The browser shows the optimized picture according to the status of the web page the user is viewing (considering size, sharpness, etc.). picture or "(min-width: 800px)" or "(min-width: 500px)" "(min-height)" or media="(orientation: portrait) and (min-width: 800px)" ⇒ You can dec..

BEM (Block Element Modifier) is a popular naming convention and methodology for organizing and structuring CSS classes in web development. It provides a systematic approach for naming and styling HTML elements to enhance code maintainability and reusability. The BEM methodology follows a specific naming convention that consists of three parts: Block, Element, and Modifier. Block: A block represe..

Viewport - `width=device-width`: Apply the same width as the width of each device - `initial-scale=1.0`: Set the initial screen scale (magnification degree) of the screen - `user-scalable=no`: Set whether the user can expand (`yes`)/reduce (`no`) the device screen - `maximum-scale=1`: The maximum value that the user can scale the screen to - `minimum-scale=1`: the minimum value that the user can..