JavaScript：BOM&DOM

Posted 2021-01-15 陈府

BOM(Browser Object Model):

feature:

　　1.BOM has no relevant standards.

　　2.The fundamental object of BOM is window.

explain:

　　We can know that BOM is closely related to the browser from it\'s name.

　　Many things in the browser can be controlled through javascript , and all of them are conneted with BOM.

　　eg:　

　　　　①Open a new window

　　　　②Open the new TAB (TAB)

　　　　③Close the page

　　　　④Set the homepage as the home page

　　　　In a word, BOM is that a browser window show except web page content.

　　　　

　　　　All of this picture show are classified to BOM.

 

DOM(Document Object Model)：

feature:

　　1.The standard of DOM is W3C.

　　2.The fundamental object of BOM is document (we also can say window.document).

explain:

　　We can know that BOM is related to Document from it\'s name.In fact, the document refers to the web page.It named html document.

　　Because web pages are sent by the server to the client browser and the HTML received is the same no matter what browser you use.

　　So,DOM is independence with browser.This is the reason why standard of DOM was fixed.

　　eg:

　　　　All of those that the same things when you use different browser to open same web page.

           

　　　　All of this picture show are classified to DOM.