Favicon favicon.ico use and precautions

1. how to view a site's favicon.ico it?

After the input /favicon.ico Company's website;
example: https://www.cnblogs.com/favicon.ico
Display results shown:

 2. favicon.ico in html how to introduce it?

The favicon.ico placed in html in the same directory, and then introduced

 

<link rel="shortcut icon" href="favicon.ico" type="image/x-icon" />

 

Note : In some classmates, often all steps are successful, butGoogle no problem, ie Firefox and life and death are not displayed, then all kinds of Baidu Various attempts were ineffective, said later found the browser cache and generate icon slow problem ,

First visit at your icon http: // localhost: 8080 / favicon.ico then visit your site, it shows the normal