没关系，这是Chrome浏览器的本机功能，专注于密码字段，聪明！ / p>

Gmail shows an icon in Chrome when the user has capslock on and focuses on the password field, how are they able to do that?

There are many related question to this, but no one seem to know how to do it without user input, like:

• How do you tell if caps lock is on using JavaScript?

Nevermind, this is a native function of the Chrome browser when focusing on password field, clever!