What does BOM mean?

Browser Object Model (BOM) refers to a representation model composed of all objects displayed by a Web browser. Unlike DOM, BOM has neither a standard implementation nor a strict definition, so browser vendors can freely implement BOM.

As a window for displaying documents, browser programs regard it as a hierarchical collection of objects. When a browser analyzes a document, it creates a collection of objects to define the document and specify how it should be displayed. Objects created by browsers are called document objects. It is part of a larger collection of objects used by browsers. A collection of browser objects is collectively referred to as a browser object model or BOM.

Extended data

Main functions of BOM:

1, the ability to pop up a new browser window.

2. Be able to move, close and change the size of the browser window.

3. Navigation objects that can provide detailed information of the WEB browser.

4. A local object that can provide detailed information of the page loaded by the browser.

At the top of the BOM hierarchy is a window object, which contains window information for displaying documents. Some window objects themselves are objects that describe documents and related information.

Baidu encyclopedia -BOM