Detecting Browser Autofill

Question

How do you tell if a browser has auto filled a text-box? Especially with username & password boxes that autofill around page load.

My first question is when does

Answer 1

I know this is an old thread but I can imagine many comes to find a solution to this here.

To do this, you can check if the input(s) has value(s) with:

$(function() {
    setTimeout(function() {
        if ($("#inputID").val().length > 0) {
            // YOUR CODE
        }
    }, 100);
});

I use this myself to check for values in my login form when it's loaded to enable the submit button. The code is made for jQuery but is easy to change if needed.