<a href="#id">See chapter ID</a>

<h2 id="chapter1">Chapter 1</h2>
<p>Your paragraphs</p>
<p> ... </p>
<a href="#chapter2">See chapter 2</a>

<h2 id="chapter2">Chapter 2</h2>
<p>Your paragraphs</p>
<p> ... </p>
<a href="#chapter1">See chapter 1</a>

$(document).ready(function() {

  var link = $('#linkId');

  var chapter = $('#chapterId');
  var position = chapter.position(); // according to jQuery api
  var offsetTop = position.top; // this should be the absolute offset of the page's top

  // Calls the tocify method on your HTML elements.
  link.tocify();
  chapter.tocify();

  //Call the tocify method with options
  link.tocify({
    showEffect: "fadeIn"
    scrollTo: offsetTop,
    smoothScroll: false
  });