Thanks for using Sitefinity.
That statement is 100% true. It is usually handled by the browser, however, you can do some client-side handling if you want some sort of autocomplete to work.
You can start by creating a cookie that holds the username values submitted.
document.cookie = name+
So when the button is clicked to log in you could call this function to create a cookie
First, though check if the cookie exists
cookie = readCookie(name);
the Telerik team
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