If this is so common, it should be easy for you to provide a link to the javascript password hasher on a site you use. Does this site do that? Pretty sure it do

If this is so common, it should be easy for you to provide a link to the javascript password hasher on a site you use. Does this site do that? Pretty sure it doesn't. But you sound very confident about this, so I'm sure you'll have no trouble finding some other site that handles its passwords this way.