title: chrome Extension : Set persistent cookie in chrome extension?
body: <p>I am working with chrome extension development here I need to set cookie value by my extension.</p>
  <p>I have set cookies by:</p>
  <pre><code>chrome.cookies.set({ url: &quot;http://example.com/&quot;, name: &quot;CookieVar&quot;, value: &quot;123&quot; });
  </code></pre>
  <p>But it available in the current browser when I close the browser data was lost so that I go with</p>
  <pre><code>chrome.cookies.set({ url: &quot;http://example.com/&quot;, name: &quot;CookieVar&quot;, value: &quot;123&quot;, expirationDate: 3600 });
  </code></pre>
  <p>But from this I am not able to see cookie information is anything I have missed here.</p>