Scrollspy

Bootstrap scrollspy

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Scrollspy allows you to automatically update Bootstrap navigation or list group components based on the scroll position to indicate which link is currently active in the viewport.

How it works

Scrollspy has a few requirements to function properly:

If you’re building our JavaScript from source, it requires util.js.
It must be used on a nav component or a list group.
Scrollspy requires position: relative on the element you’re spying on, usually the <body>.
When spying on elements other than the <body>, be sure to have a height set and overflow-y: scroll applied.
Anchors ( <a>) are required and must point to an element with that id.

When successfully implemented, your nav or list group will update accordingly, moving the .active class from one item to the next based on their associated targets.

Example in navbar

Please scroll the area below the navbar and watch the active class change. The dropdown items will be highlighted as well.

Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.

Show code Edit in sandbox

HTML

        
            

        <nav id="navbar-example2" class="navbar navbar-light bg-light">
          <a class="navbar-brand" href="#">Navbar</a>
          <ul class="nav nav-pills">
            <li class="nav-item">
              <a class="nav-link active" href="#navbar-example2-fat">@fat</a>
            </li>
            <li class="nav-item">
              <a class="nav-link" href="#navbar-example2-mdo">@mdo</a>
            </li>
            <li class="nav-item dropdown">
              <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-haspopup="true"
                aria-expanded="false">Dropdown</a>
              <div class="dropdown-menu">
                <a class="dropdown-item" href="#navbar-example2-one">one</a>
                <a class="dropdown-item" href="#navbar-example2-two">two</a>
                <div role="separator" class="dropdown-divider"></div>
                <a class="dropdown-item" href="#navbar-example2-three">three</a>
              </div>
            </li>
          </ul>
        </nav>
        <div data-spy="scroll" data-target="#navbar-example2" class="scrollspy-example z-depth-1 mt-4" data-offset="0">
          <h4 id="navbar-example2-fat">@fat</h4>
          <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui.
            Tumblr
            farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo
            booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't
            heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus,
            cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
          <h4 id="navbar-example2-mdo">@mdo</h4>
          <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui.
            Tumblr
            farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo
            booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't
            heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus,
            cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
          <h4 id="navbar-example2-one">one</h4>
          <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui.
            Tumblr
            farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo
            booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't
            heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus,
            cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
          <h4 id="navbar-example2-two">two</h4>
          <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui.
            Tumblr
            farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo
            booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't
            heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus,
            cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
          <h4 id="navbar-example2-three">three</h4>
          <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui.
            Tumblr
            farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo
            booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't
            heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus,
            cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
        </div>

Example with nested nav

Scrollspy also works with nested .navs. If a nested .nav is .active, its parents will also be .active. Scroll the area next to the navbar and watch the active class change.

Item 1

Item 1-1

Item 2-2

Item 2

Item 3

Item 3-1

Item 3-2

Show code Edit in sandbox

HTML
CSS

        
            

        <div class="row">
          <div class="col-sm-4 col-lg-3">
            <nav id="navbar-example3" class="navbar navbar-light bg-light flex-column mt-4">
              <a class="navbar-brand" href="#">Navbar</a>
              <nav class="nav nav-pills flex-column">
                <a class="nav-link active" href="#item-1">Item 1</a>
                <nav class="nav nav-pills flex-column">
                  <a class="nav-link ml-3 my-1" href="#item-1-1">Item 1-1</a>
                  <a class="nav-link ml-3 my-1" href="#item-1-2">Item 1-2</a>
                </nav>
                <a class="nav-link" href="#item-2">Item2</a>
                <a class="nav-link" href="#item-3">Item3</a>
                <nav class="nav nav-pills flex-column">
                  <a class="nav-link ml-3 my-1" href="#item-3-1">Item 3-1</a>
                  <a class="nav-link ml-3 my-1" href="#item-3-2">Item 3-2</a>
                </nav>
              </nav>
            </nav>
          </div>

          <div class="col-sm-8 col-lg-9">
            <div data-spy="scroll" class="scrollspy-example z-depth-1 mt-4" data-target="#navbar-example3"
              data-offset="0">
              <h4 id="item-1">Item 1</h4>
              <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out
                qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan
                mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim
                qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic.
                Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
              <h5 id="item-1-1">Item 1-1</h5>
              <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out
                qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan
                mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim
                qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic.
                Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
              <h5 id="item-1-2">Item 2-2</h5>
              <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out
                qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan
                mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim
                qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic.
                Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
              <h4 id="item-2">Item 2</h4>
              <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out
                qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan
                mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim
                qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic.
                Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
              <h4 id="item-3">Item 3</h4>
              <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out
                qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan
                mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim
                qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic.
                Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
              <h5 id="item-3-1">Item 3-1</h5>
              <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out
                qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan
                mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim
                qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic.
                Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
              <h5 id="item-3-2">Item 3-2</h5>
              <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out
                qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan
                mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim
                qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic.
                Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
            </div>
          </div>
        </div>

        
            

        .scrollspy-example {
          height: 360px;
        }

Example with list-group

Scrollspy also works with .list-groups. Scroll the area next to the list group and watch the active class change.

Item 1 Item2 Item 3 Item 4

Item 1

Ex consequat commodo adipisicing exercitation aute excepteur occaecat ullamco duis aliqua id magna ullamco eu. Do aute ipsum ipsum ullamco cillum consectetur ut et aute consectetur labore. Fugiat laborum incididunt tempor eu consequat enim dolore proident. Qui laborum do non excepteur nulla magna eiusmod consectetur in. Aliqua et aliqua officia quis et incididunt voluptate non anim reprehenderit adipisicing dolore ut consequat deserunt mollit dolore. Aliquip nulla enim veniam non fugiat id cupidatat nulla elit cupidatat commodo velit ut eiusmod cupidatat elit dolore.

Item 2

Quis magna Lorem anim amet ipsum do mollit sit cillum voluptate ex nulla tempor. Laborum consequat non elit enim exercitation cillum aliqua consequat id aliqua. Esse ex consectetur mollit voluptate est in duis laboris ad sit ipsum anim Lorem. Incididunt veniam velit elit elit veniam Lorem aliqua quis ullamco deserunt sit enim elit aliqua esse irure. Laborum nisi sit est tempor laborum mollit labore officia laborum excepteur commodo non commodo dolor excepteur commodo. Ipsum fugiat ex est consectetur ipsum commodo tempor sunt in proident.

Item 3

Quis anim sit do amet fugiat dolor velit sit ea ea do reprehenderit culpa duis. Nostrud aliqua ipsum fugiat minim proident occaecat excepteur aliquip culpa aute tempor reprehenderit. Deserunt tempor mollit elit ex pariatur dolore velit fugiat mollit culpa irure ullamco est ex ullamco excepteur.

Item 4

Show code Edit in sandbox

HTML
CSS

        
            

        <div class="row">
          <div class="col-4">
            <div id="list-example" class="list-group">
              <a class="list-group-item list-group-item-action active" href="#list-item-1">Item 1</a>
              <a class="list-group-item list-group-item-action" href="#list-item-2">Item2</a>
              <a class="list-group-item list-group-item-action" href="#list-item-3">Item 3</a>
              <a class="list-group-item list-group-item-action" href="#list-item-4">Item 4</a>
            </div>
          </div>
          <div class="col-8">
            <div data-spy="scroll" data-target="#list-example" data-offset="0" class="scrollspy-example z-depth-1">
              <h4 id="list-item-1">Item 1</h4>
              <p>Ex consequat commodo adipisicing exercitation aute excepteur occaecat ullamco duis aliqua id magna
                ullamco eu. Do aute ipsum ipsum ullamco cillum consectetur ut et aute consectetur labore. Fugiat
                laborum incididunt tempor eu consequat enim dolore proident. Qui laborum do non excepteur nulla magna
                eiusmod consectetur in. Aliqua et aliqua officia quis et incididunt voluptate non anim reprehenderit
                adipisicing dolore ut consequat deserunt mollit dolore. Aliquip nulla enim veniam non fugiat id
                cupidatat nulla elit cupidatat commodo velit ut eiusmod cupidatat elit dolore.</p>
              <h4 id="list-item-2">Item 2</h4>
              <p>Quis magna Lorem anim amet ipsum do mollit sit cillum voluptate ex nulla tempor. Laborum consequat non
                elit enim exercitation cillum aliqua consequat id aliqua. Esse ex consectetur mollit voluptate est in
                duis laboris ad sit ipsum anim Lorem. Incididunt veniam velit elit elit veniam Lorem aliqua quis
                ullamco deserunt sit enim elit aliqua esse irure. Laborum nisi sit est tempor laborum mollit labore
                officia laborum excepteur commodo non commodo dolor excepteur commodo. Ipsum fugiat ex est consectetur
                ipsum commodo tempor sunt in proident.</p>
              <h4 id="list-item-3">Item 3</h4>
              <p>Quis anim sit do amet fugiat dolor velit sit ea ea do reprehenderit culpa duis. Nostrud aliqua ipsum
                fugiat minim proident occaecat excepteur aliquip culpa aute tempor reprehenderit. Deserunt tempor
                mollit elit ex pariatur dolore velit fugiat mollit culpa irure ullamco est ex ullamco excepteur.</p>
              <h4 id="list-item-4">Item 4</h4>
              <p>Quis anim sit do amet fugiat dolor velit sit ea ea do reprehenderit culpa duis. Nostrud aliqua ipsum
                fugiat minim proident occaecat excepteur aliquip culpa aute tempor reprehenderit. Deserunt tempor
                mollit elit ex pariatur dolore velit fugiat mollit culpa irure ullamco est ex ullamco excepteur.</p>
            </div>
          </div>
        </div>

        
            

        .scrollspy-example {
          height: 360px;
        }

MDB Scrollspy MDB Pro component

Section 1

Lorem ipsum dolor sit amet consectetur adipisicing elit. Dolorem ipsa at provident qui doloremque libero quo non pariatur quaerat iure, nostrum, possimus vitae sequi officiis quasi dolores asperiores earum quis!

Subsection 1A

Subsection 1B

Subsection 1C

Section 2

Subsection 2A

Subsection 2B

Show code Edit in sandbox

HTML
CSS

        
            

      <!--Grid row-->
      <div class="row">

        <!--Grid column-->

        <div class="col-md-8">

          <!--Spied element-->
          <div class="scrollspy-example
   z-depth-1 text-center p-0" data-spy="scroll" data-target="#mdb-scrollspy-ex" data-offset="0">


            <section id="section1" class="blue lighten-4">

              <h3>

                <strong>Section 1</strong>
              </h3>
              <p>Lorem ipsum dolor sit amet consectetur adipisicing
                elit. Dolorem ipsa at provident qui doloremque
                libero quo non pariatur quaerat iure, nostrum, possimus vitae sequi
                officiis quasi dolores
                asperiores earum quis!</p>
              <hr>
              <section id="subsection1A" class=" m-4 red lighten-4">
                <h4>
                  Subsection 1A
                </h4>
                <p>Lorem
                  ipsum dolor sit amet consectetur adipisicing elit. Dolorem ipsa at provident qui doloremque
                  libero quo non pariatur
                  quaerat iure, nostrum, possimus vitae sequi officiis quasi dolores
                  asperiores earum quis!</p>
              </section>

              <hr>
              <section id="subsection1B" class=" m-4 green lighten-4">
                <h4>

                  Subsection 1B
                </h4>
                <p>Lorem ipsum dolor sit amet consectetur adipisicing elit. Dolorem ipsa
                  at provident qui doloremque
                  libero quo non pariatur quaerat iure, nostrum, possimus vitae sequi officiis quasi
                  dolores
                  asperiores earum quis!</p>
              </section>
              <hr>
              <section id="subsection1C" class=" m-4 indigo lighten-4">
                <h4>
                  Subsection 1C

                </h4>
                <p>Lorem ipsum dolor sit amet consectetur adipisicing elit. Dolorem ipsa at provident qui doloremque

                  libero quo non pariatur quaerat iure, nostrum, possimus vitae sequi officiis quasi dolores
                  asperiores earum quis!</p>

              </section>
            </section>
            <section id="section2" class="blue lighten-4">

              <h3>
                <strong>Section 2</strong>
              </h3>
              <p>Lorem ipsum dolor sit
                amet consectetur adipisicing elit. Dolorem ipsa at provident qui doloremque
                libero quo non pariatur quaerat iure,
                nostrum, possimus vitae sequi officiis quasi dolores
                asperiores earum quis!</p>
              <hr>

              <section id="subsection2A" class=" m-4 red lighten-4">
                <h4>
                  Subsection
                  2A
                </h4>
                <p>Lorem ipsum dolor sit amet consectetur adipisicing elit. Dolorem ipsa at provident
                  qui doloremque
                  libero quo non pariatur quaerat iure, nostrum, possimus vitae sequi officiis quasi dolores

                  asperiores earum quis!</p>
              </section>
              <hr>
              <section id="subsection2B" class=" m-4 green lighten-4">
                <h4>
                  Subsection 2B
                </h4>
                <p>Lorem
                  ipsum dolor sit amet consectetur adipisicing elit. Dolorem ipsa at provident qui doloremque
                  libero quo non pariatur
                  quaerat iure, nostrum, possimus vitae sequi officiis quasi dolores
                  asperiores earum quis!</p>
              </section>

              <hr>
              <section id="subsection2C" class=" m-4 indigo lighten-4">
                <h4>

                  Subsection 2C
                </h4>
                <p>Lorem ipsum dolor sit amet consectetur adipisicing elit. Dolorem ipsa
                  at provident qui doloremque
                  libero quo non pariatur quaerat iure, nostrum, possimus vitae sequi officiis quasi
                  dolores
                  asperiores earum quis!</p>
              </section>
            </section>


          </div>
          <!--/.Spied element-->

        </div>
        <!--Grid column-->


        <!--Grid column-->
        <div class="col-md-3 mb-4">

          <!--Scrollspy-->

          <div id="mdb-scrollspy-ex">

            <!-- Links -->
            <ul class="nav nav-pills
   default-pills smooth-scroll">
              <li class="nav-item">
                <a class="nav-link" href="#section1">Section 1</a>
                <ul class="nav ml-3">
                  <li class="nav-item">

                    <a class="nav-link" href="#subsection1A">Subsection 1A</a>
                  </li>

                  <li class="nav-item">
                    <a class="nav-link" href="#subsection1B">Subsection
                      1B</a>
                  </li>
                  <li class="nav-item">
                    <a class="nav-link" href="#subsection1C">Subsection 1C</a>
                  </li>
                </ul>
              </li>

              <li class="nav-item">
                <a class="nav-link" href="#section1">Section 2</a>

                <ul class="nav ml-3">
                  <li class="nav-item">
                    <a class="nav-link" href="#subsection2A">Subsection 2A</a>
                  </li>
                  <li class="nav-item">

                    <a class="nav-link" href="#subsection2B">Subsection 2B</a>
                  </li>

                  <li class="nav-item">
                    <a class="nav-link" href="#subsection2C">Subsection
                      2C</a>
                  </li>
                </ul>
              </li>
            </ul>
            <!-- Links
   -->

          </div>
          <!--Scrollspy-->

        </div>
        <!--Grid
   column-->

      </div>
      <!--Grid row-->

        
            

      #mdb-scrollspy-ex .nav-item {
        width: 100%;
      }

      #mdb-scrollspy-ex a {
        font-size: .8rem;
        font-weight: 400;
        line-height: 1.1rem;
        padding: 0 5px;
        margin-top: 3px;
        margin-bottom: 3px;
        color: black;
      }

      #mdb-scrollspy-ex li .active {
        font-weight: 600;
      }

      .mdb-scrollspy-ex-example {
        height: 200px;
      }

Dotted Scrollspy MDB Pro component

Making the navigation more informative and intuitive is still a challenge to most developers.

Thanks to dotted ScrollSpy, this issue is simply resolved with the use of sticking elements that indicate on which part of the page your users are, and how much longer they can expect the website to be loading.

Another invaluable option that comes with dotted ScrollSpy is the ability to swiftly switch between desired parts of your webpage with just one click.

Live Example

Show code Edit in sandbox

HTML
JS

        
            

        <section id="one"></section>
        <section id="two"></section>
        <section id="three"></section>
        <section id="four"></section>
        <section id="five"></section>
        <section id="six"></section>

        <!-- Scrollspy -->
        <div class="dotted-scrollspy">
          <ul class="nav smooth-scroll clearfix d-none d-sm-flex flex-column">
            <li class="nav-item"><a class="nav-link" href="#one"><span></span></a></li>
            <li class="nav-item"><a class="nav-link" href="#two"><span></span></a></li>
            <li class="nav-item"><a class="nav-link" href="#three"><span></span></a></li>
            <li class="nav-item"><a class="nav-link" href="#four"><span></span></a></li>
            <li class="nav-item"><a class="nav-link" href="#five"><span></span></a></li>
            <li class="nav-item"><a class="nav-link" href="#six"><span></span></a></li>
          </ul>
        </div>

        
            

        $('body').scrollspy({
          target: '.dotted-scrollspy'
        });

Usage

Via data attributes

To easily add scrollspy behavior to your topbar navigation, add data-spy="scroll" to the element you want to spy on (most typically this would be the <body>). Then add the data-target attribute with the ID or class of the parent element of any Bootstrap .nav component.

Show code Edit in sandbox

HTML
CSS

        
            

        <body data-spy="scroll" data-target="#navbar-example">
          ...
          <div id="navbar-example">
            <ul class="nav nav-tabs" role="tablist">
              ...
            </ul>
          </div>
          ...
        </body>

        
            
        body {
          position: relative;
        }

Via JavaScript

Show code Edit in sandbox

        
            
        $('body').scrollspy({ target: '#navbar-example' })

Resolvable ID targets are required

Navbar links must have resolvable id targets. For example, a <a href="#home">home</a> must correspond to something in the DOM like <div id="home"></div>.

Non- :visible target elements are ignored

Target elements that are not :visible according to jQuery will be ignored and their corresponding nav items will never be highlighted.

Methods

`.scrollspy('refresh')`

When using scrollspy in conjunction with adding or removing elements from the DOM, you’ll need to call the refresh method like so:

Show code Edit in sandbox

        
            
        $('[data-spy="scroll"]').each(function () {
          var $spy = $(this).scrollspy('refresh')
        })

`.scrollspy('dispose')`

Destroys an element’s scrollspy.

Options

Options can be passed via data attributes or JavaScript. For data attributes, append the option name to data-, as in data-offset="".

Name	Type	Default	Description
offset	number	10	Pixels to offset from the top when calculating the position of scroll.
method	string	auto	Finds which section the spied element is in. `auto` will choose the best method to get the scroll coordinates. `offset` will use the jQuery offset method to get the scroll coordinates. `position` will use the jQuery position method to get the scroll coordinates.
target	string		Specifies the element to apply the Scrollspy plugin to.

Events

Event Type	Description
activate.bs.scrollspy	This event fires whenever a new item becomes activated by the scrollspy.

Show code Edit in sandbox

        
            
    $('#myScrollspy').on('activate.bs.scrollspy', function () {
     // do something…
    })