jQuery Simple Example
HTML
<script src="//www.addressfinder.co.nz/assets/v2/widget.js"></script>
<form action="action_page.php">
Username:<br>
<input id="user" type="text">
<br>
Password:<br>
<input id="pass" type="password" name="lastname">
<br>
<br>
<input type="submit" value="Submit">
JavaScript
console.log("The password is: ",$('#pass').val());