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  <title>Scrolling to an element in a non-window container: correct method for calculating the target position - JS Bin</title>
  <meta name="description" content="Scrolling to an element in a non-window container: correct method for calculating the target position">
  
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  <h1>Scrolling to an element in a non-window container: correct method for calculating the target position</h1>
  <p class="attn">Scroll an item to the top by clicking on it.</p>
  <p>Select a method for calculating the target position:</p>
  
  <form action="">
    <input type="radio" id="wrong" name="method" value="wrong" checked>
    <label for="#wrong"><p>Relying on $.fn.offset():<br><code>$target.offset().top - $container.offset().top + $container.scrollTop()</code></p><p>Does not work correctly. Does not take the border of the scroll container into account.</p></label>
    
    <input type="radio" id="right" name="method" value="right">
    <label for="#right"><p>Correct method:<br><code>var target = $target[0], container = $container[0];<br>
return $container.scrollTop() + target.getBoundingClientRect().top - container.getBoundingClientRect().top - container.clientTop;</code></p></label>
    
  </form>
  
  <div class="scrollContainer">
    <div class="contentPane">
      <a class="item" href="#">Item #1</a>
      <a class="item" href="#">Item #2</a>      
      <a class="item" href="#">Item #3</a>      
    </div>
  </div>
  
  <p>For a function which works for both window and non-window scroll containers, see <a href="https://gist.github.com/hashchange/c368ce9c642c1a70edda" title="Github Gist | hashchange/scrollTargetPosition.js | Returns the scroll target position for scrolling to the top of an element.">this gist</a>.</p>
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