what is the current sunday

HTML

<script src="//www.addressfinder.co.nz/assets/v2/widget.js"></script>
<span id="current-sunday"></span>

JavaScript

$(document).ready(function() {
	var months = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
	var today = new Date();
  var dateString = "";
  //if day is currently sunday, skip ahead to writing string
  if (today.getDay() == 0){
  } else {
    //else if it's not sunday, increment the date forward to the next sunday
    for (i=today.getDay(); i<7; i++){
      today.setDate(today.getDate() + 1);
   	};  
  };
  //put together the date in a string and put it in the span
  dateString = months[today.getMonth()] + " " + today.getDate() + ", 		" + today.getFullYear();
  $("#current-sunday").text(dateString);
});