><span class="p">(</span><span class="s1">'shown.bs.tab'</span><span class="p">,</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">e</span><span class="p">)</span> <span class="p">{</span>
  <span class="nx">e</span><span class="p">.</span><span class="nx">target</span> <span class="c1">// newly activated tab</span>
  <span class="nx">e</span><span class="p">.</span><span class="nx">relatedTarget</span> <span class="c1">// previous active tab</span>
<span class="p">})</span></