title: Add js in odoo 9
body: <p>I want to extend OrderWidget in Point of Sale and display date in between the h2 tag.</p>
  
  <pre><code>  &lt;script&gt;
      var d = new Date();
      var strDate = d.getFullYear() + "/" + (d.getMonth()+1) + "/" + d.getDate();
      $("#div1").load(strDate);
    &lt;/script&gt;
  </code></pre>
  
  <hr>
  
  <p>i have inherited the template of OrderWidget like this.</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
    &lt;templates id="template" xml:space="preserve"&gt;
    &lt;t t-extend="OrderWidget" &gt;
    &lt;t t-jquery=".order-empty" t-operation="append"&gt;
              &lt;h2 id="div1"&gt;&lt;/h2&gt;
    &lt;/t&gt;
    &lt;/t&gt;
    &lt;/templates&gt;
  </code></pre>
  
  <p>Where can i put script in above example?</p>