auto-scrolling webpage as elements come into view

Here is some jQuery code I have:

$(".col-md-12").hide();
$(".button-div").hide();
$(".featurette-divider").hide();
$(".footer").hide();
$(".first").fadeIn(1000);
$(".second").delay(900).fadeIn(1000);
$(".third").delay(1800).fadeIn(1000);
$(".fourth").delay(2700).fadeIn(1000);
$(".button-div").delay(3600).fadeIn(1000);
$(".featurette-divider").delay(4000).fadeIn(1000);
$(".footer").delay(5000).fadeIn(1000);

I am looking to automatically scroll the page to the bottom as each element appears.

UPDATE 1

<div class="container">
    <div class="col-md-12 first">
      <div class="thumbnail">
        <div class="caption">
          <h3>hero name</h3>
          <img src="..." alt="...">
          <p></p>
          <div class="table-responsive">
            <table class="table table-bordered table-striped">
              <colgroup>
                <col class="col-xs-1">
                <col class="col-xs-7">
              </colgroup>
              <thead>
                <tr>
                  <th colspan="2" style="text-align:center">Abilities</th>
                </tr>
                <tr>
                  <th>Name</th>
                  <th>Description</th>
                </tr>
              </thead>
              <tbody>
                <tr>
                  <th scope="row">
                    <code>.active</code>
                  </th>
                  <td>Applies the hover color to a particular row or cell</td>
                </tr>
                <tr>
                  <th scope="row">
                    <code>.success</code>
                  </th>
                  <td>Indicates a successful or positive action</td>
                </tr>
                <tr>
                  <th scope="row">
                    <code>.info</code>
                  </th>
                  <td>Indicates a neutral informative change or action</td>
                </tr>
                <tr>
                  <th scope="row">
                    <code>.warning</code>
                  </th>
                  <td>Indicates a warning that might need attention</td>
                </tr>
                <tr>
                  <th scope="row">
                    <code>.danger</code>
                  </th>
                  <td>Indicates a dangerous or potentially negative action</td>
                </tr>
              </tbody>
            </table>
          </div>
        </div>
      </div>  
    </div><!-- end col-lg-6 -->

    <!-- More similar content with different hero names and abilities -->

    <div class="centered button-div">
      <button type="button" class="btn btn-danger btn-lg">Next <span class="glyphicon glyphicon-arrow-right"></span></button>
    </div>

    <hr class="featurette-divider">

    <footer class="footer">
      <p>© 2015 · <a href="#">About</a> · <a href="#">Contact</a></p>
    </footer>
</div>

This is my Bootstrap-based HTML layout, containing a container for the content.

Answer №1

To achieve a smooth scrolling effect when elements appear on your page, you can use JQuery's scrollTop function. This allows you to scroll the document to a specific height in pixels:

$(document).scrollTop(heightInPixels);

If you want to scroll the entire document to the end, you can do so by calculating the document's total height and then scrolling to that point:

var documentHeight = $(document).height();
$(document).scrollTop(documentHeight);

For each element's appearance, you will need to call the scrollDocument function after the effect or add a callback function once the effects are complete:

function scrollDocument(){
  var documentHeight = $(document).height();
  $(document).scrollTop(documentHeight);
}

// Element "appearings"
$(".first").fadeIn(1000,  scrollDocument );
....
$( ".footer" ).delay(5000).fadeIn(1000, scrollDocument );

If you wish to apply this behavior to specific elements within a container, you can modify the selector in the code snippet accordingly. Changing "$(document)" to "$('div.container')" should make it work as intended.

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