What does bom mean in js

BOM (Browser Object Model) is a set of JavaScript objects used to interact with the browser and its components, and can operate windows, documents, forms, history, etc. Its main objects include window, document, navigator, location, history and screen. Through BOM, developers can implement functions such as operating windows, documents, user input, browsing history, obtaining browser information, controlling timers, etc., and are widely used in the development of interactive web applications.

What is BOM?

BOM (Browser Object Model) is a set of objects provided by JavaScript for interacting with the browser and its components. It allows JavaScript scripts to access and manipulate various aspects of the browser environment, such as windows, documents, forms, and history.

Objects of BOM

The BOM consists of the following main objects:

• window: Represents the browser window.
• document: Represents HTML document.
• navigator: Provides information about the browser and the user.
• location: Contains information about the URL and location of the current document.
• history: Manage browsing history.
• screen: Provides information about screen resolution and size.

Function of BOM

Through BOM, JavaScript script can perform the following operations:

• Operation window: Open, close, move and resize the browser window.
• Operation document: Get page title, metadata and document elements.
• Get user input: Use forms and event handlers to collect user input.
• Manage browsing history: Forward, back and refresh the page.
• Get browser information: Determine the user's browser type, version and operating system.
• Control timer: Set timeout, interval and animation.

Usage of BOM

BOM is used to create various interactive web applications, such as:

• Dynamic menus and Navigation
• Form Validation and User Interaction
• Browser Window Control
• User Tracking and Analytics
• Games and Animation

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