While using v1.18.0 of the jQuery Validation plugin, alongside jQuery Migrate 3.0.1, I got a console warning concerning the following line using deprecated markup:

Looking through the rest of the code, the up to date on()/off()/trigger() event handlers are used, so it's entirely possible this is the only instance of the code which is deprecated?

It only needs changing from:

focus()

to

trigger('focus')

The Migrate plugin doesn't appear to complain about anything else, but would be grateful if anyone can confirm this?

Many thanks

Stephen Scott