Stop LastPass filling out a form

Question

Is there a way to prevent the LastPass browser extension from filling out a HTML-based form with a input field with the name \"username\"?

This is an hidden field,

Answer 1

This ES6 style code was helpful for me as it added data-lpignore to all my input controls:

const elements = document.getElementsByTagName("INPUT");
for (let element of elements) {
    element.setAttribute("data-lpignore", "true");
}

To access a specific INPUT control, one could write something like this:

document.getElementById('userInput').setAttribute("data-lpignore", "true");

Or, you can do it by class name:

const elements = document.getElementsByClassName('no-last-pass');
for (let element of elements) {
    element.setAttribute("data-lpignore", "true");
}