How would I add a LastPass ignore parameter to the login page

I have an app with Security enabled and a generated Login page. I would like to stop LastPass from filling in the username and password for users. My web developer gave me these instructions:

How would I do that?

Probably the easiest way is to set the attribute via JavaScript. Handle the Load event of the login page and execute the following JavaScript:

document.querySelector('input[type="password"]').setAttribute('data_lpignore', 'true');

This stackoverflow answer however makes me think the actual attribute is data-lpignore so if the above does not work try this:

document.querySelector('input[type="password"]').setAttribute('data-lpignore', 'true');

Good catch! My web developer remembered that in C# he had to use an underscore and it would translate as a hyphen.