title: Should I use &amp; in href="" or & is enough in HTML4 and HTML5?
body: <p>Should I use <code>&amp;amp;</code> in <code>href=&quot;&quot;</code> or <code>&amp;</code> is enough in HTML4 and HTML5?</p>
  <p>The most of browser not have problem with this but how it should be done?</p>
  <pre class="lang-html prettyprint-override"><code>&lt;a href=&quot;?param1=1&amp;param2=2&quot;&gt;Call()&lt;/a&gt;
  </code></pre>
  <p>Or</p>
  <pre class="lang-html prettyprint-override"><code>&lt;a href=&quot;&amp;quest;param1=1&amp;amp;param2=2&quot;&gt;Call()&lt;/a&gt;
  </code></pre>