Merge pull request #13397 from twbs/fix-13394

document that non-:visible scrollspy targets are ignored

docs/_includes/js/scrollspy.html

@@ -83,6 +83,10 @@ $('body').scrollspy({ target: '.navbar-example' })
     <h4>Resolvable ID targets required</h4>
     <p>Navbar links must have resolvable id targets. For example, a <code>&lt;a href="#home"&gt;home&lt;/a&gt;</code> must correspond to something in the DOM like <code>&lt;div id="home"&gt;&lt;/div&gt;</code>.</p>
   </div>
+  <div class="bs-callout bs-callout-info">
+    <h4>Non-<code>:visible</code> target elements ignored</h4>
+    <p>Target elements that are not <a href="http://api.jquery.com/visible-selector/"><code>:visible</code> according to jQuery</a> will be ignored and their corresponding nav items will never be highlighted.</p>
+  </div>
 
   <h3>Methods</h3>
   <h4>.scrollspy('refresh')</h4>