title: How to give effect in body but not for particular div using jQuery
body: <p>I have one page and in this, I have toggle menu. When I open menu, the whole body gets blurred but I don't want the menu to be blurred.</p>
  
  <p>I have tried:  </p>
  
  <p><div class="snippet" data-lang="js" data-hide="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>$(document).ready(function() {
    $("button").click(function() {
      $("body").toggleClass("blur-body")
      $(".menu-ul").slideToggle("slow")
    });
  });</code></pre>
  <pre class="snippet-code-css lang-css prettyprint-override"><code>.blur-body {
    -webkit-filter: blur(5px);
    filter: blur(5px);
  }
  .menu-ul {
    display: none
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"&gt;&lt;/script&gt;
  &lt;p&gt;This is a paragraph.&lt;/p&gt;
  &lt;span&gt;This is a another paragraph.&lt;/span&gt;
  &lt;br/&gt;
  &lt;br/&gt;
  &lt;button&gt;Menu&lt;/button&gt;
  &lt;ul class="menu-ul"&gt;
    &lt;li&gt;1&lt;/li&gt;
    &lt;li&gt;11&lt;/li&gt;
    &lt;li&gt;111&lt;/li&gt;
    &lt;li&gt;1111&lt;/li&gt;
    &lt;li&gt;11111&lt;/li&gt;
  &lt;/ul&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <blockquote>
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  </blockquote>