JavaScript Browser object Model BOM (Browserobjectmodel) example detailed _javascript tips

This example describes the JavaScript browser object model BOM. Share to everyone for your reference, specific as follows:

The Window object is at the top level of the BOM hierarchy. It contains a number of very important child objects, including Location,navigator,document,screen,history. The Location object contains the URL information for the current page. Some of the information is read-only, and some information can be read and written, such as the href attribute. Not only can we get the URL information for the current page through the href attribute, but we can also jump to the new page by modifying the href attribute.

The history object holds the history of the page visited by the user since the browser was opened. However, some pages are not recorded, such as pages loaded using the Location object's replace () method will not be recorded in the History object.
The Navigator object represents the browser itself, which contains some very useful information about the browser, such as the version number, the browser type, and the operating system the user is using.
The Screen object contains information about the display capabilities of the customer service side.

Document is one of the most important objects. The Document object contains three array properties links[],images[],forms[]. These three arrays represent all the collections of objects created by <A>, , <form>, respectively, on the page.

With these three arrays, you can access the corresponding object created for the tag, modify the image of the page by modifying the properties of the IMG object, and change the URL of the hyperlink by modifying the properties of the Hyperlink object.

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