jQuery Simple Example

HTML

<script src="//www.addressfinder.co.nz/assets/v2/widget.js"></script>

<button class='delete_current_form'>Delete</button>

CSS

body {
    padding: 5px;
}

label {
    font-weight: bold;
}

input[type=text] {
    width: 20em
}

p {
    margin: 1em 0 0;
}

JavaScript

$(document).ready(function() {
  $('.delete_current_form').on('click', function() {
      if(confirm("{{ 'Post will be deleted! Continue?'|trans }}") ){
        	alert("Ok clicked");
          // Do whatever you want to do when OK clicked
      }
      else{
      		alert("Cancle clicked");
          // Do whatever you want to do when OK clicked
      }
    });
});