title: onClick event doesn't work inside form tag
body: <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
      &lt;head&gt;
      &lt;/head&gt;
      &lt;script&gt;    
          function removeP2() {
              var parent = document.getElementById("section");
              var child = document.getElementById("p2");
              parent.removeChild(child);
          }
      &lt;/script&gt;
      &lt;body&gt;
          &lt;nav&gt;
              &lt;form&gt;
                 &lt;button onclick="removeP2();"&gt;Remove&lt;/button&gt; 
              &lt;/form&gt;
          &lt;/nav&gt;
          &lt;section id="section"&gt;
              &lt;p id="p1"&gt;Paragraph One.&lt;/p&gt;
              &lt;p id="p2"&gt;Paragraph Two.&lt;/p&gt;
          &lt;/section&gt;
      &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>When I click the submit button, the function executes as usual, but after the function executes, the page reloads itself (removed P2 for a second).</p>
  
  <p>I found a solution which is to delete the "Form" inside the "nav" tag, and it works fine. Just want to ask what is the problem cause that, and if I need to have the "Form" tag inside the "nav" tag, which part I need to fix?</p>