What are the core objects of bom and dom

The core objects of bom and dom are window objects and document objects respectively. The window object represents the browser window and provides a series of methods and properties to operate the browser window. The window object can be accessed and controlled through JavaScript code, and it provides some commonly used methods. The document object represents the document of the current web page. It provides a series of methods and attributes to operate the content of the web page. Through the document object, you can access and operate various elements in the web page.

The operating system for this tutorial: Windows 10 system, DELL G3 computer.

BOM (Browser Object Model) and DOM (Document Object Model) are two important concepts often encountered in web development. They are all models created to operate and control web pages. Although they are conceptually different, their core objects are all designed to provide access to and manipulation of web page elements.

The core object of BOM is the window object. The window object represents the browser window and provides a series of methods and properties to manipulate the browser window. The window object can be accessed and controlled through JavaScript code. It provides some common methods, such as opening a new window, closing the window, resizing the window, etc. In addition, the window object also provides some methods for interacting with the browser, such as pop-up dialog boxes, timers, etc.

In addition to the window object, the BOM also contains some other objects, such as navigator object, screen object, history object and location object, etc. These objects provide browser-related information and functionality. For example, the navigator object can obtain browser-related information, such as browser name, version, operating system, etc.; the screen object can obtain screen-related information, such as screen width, height, etc.; the history object can be used to operate the browser. History records, such as forward, backward, etc.; the location object can obtain the URL information of the current page and can be used to jump to other pages.

The core object of DOM is the document object. The document object represents the document of the current web page, and it provides a series of methods and properties to manipulate the content of the web page. Through the document object, you can access and operate each element in the web page, such as obtaining the content of the element, modifying the style of the element, adding new elements, etc. The document object also provides some event-related methods, such as adding event listeners, triggering events, etc.

In addition to the document object, DOM also contains some other objects, such as element objects, attribute objects, event objects, etc. The element object represents the element node in the web page, and can be used to access and operate the properties and methods of the element. The attribute object represents the attribute node of the element, through which the attributes of the element can be accessed and modified. The event object represents the event object, which can be used to obtain event-related information, such as the type of event, triggered elements, etc.

In summary, the core objects of BOM and DOM are window object and document object respectively. They provide a rich set of methods and properties to manipulate and control the content and behavior of web pages. By learning and understanding these core objects, we can better perform web development and achieve more functions and interactive effects.

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