vs code to add extended real-time display of your pages live server

After vs code to add extended live server, right-click index.html select open with live server. After automatically open a Web page, and the code will automatically update each time you save the page. The best open auto-save feature vs code of,

vs code, auto-save: file (file) ---- saved automatically (auto save),

Then set the file --- --- auto save option below into onFocusChange