What are Dom and BOM in JS

BOM It controls browser behavior api,DOM It is a page structure api

1）DOM：document object model, Document object model

• Used to get or set the properties of document labels
• JS Can pass DOM Which tags are obtained , What are the attributes of the tag , What are the contents
• DOM The object of operation is the document , therefore DOM It has nothing to do with the browser , Pay attention to the content of the web page itself

2）BOM：browser object model, Browser object model , Provide content independent objects that interact with browser windows

• Manage communication between windows , The core object is window–》location（ be used for url Related operations ）、history（ For history related operations ）,navigator（ Contains browser related information ）