Datepicker in a User Custom field

I got what I wanted to work using this:

A jQuery date picker in the user field input.

<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">


<script type="text/discourse-plugin" version="0.8">
$( document ).ajaxComplete(function() {
    api.onPageChange(() =>{
	$( function() {
		var control = $("label:contains('Quit Smoking Date')").next('div.controls');
		$(control).find('input').addClass('quitDate');
		$( ".quitDate" ).datepicker();
	});
    });
});
</script>

It would be nice to be able to detect the profile page URL using this but I couldn’t get it to work

api.onPageChange((url) => {
        if (url === '/' || url === '/latest' || url === '/top') {