title: Add and execute xml tag into html file
body: <p><em>I am using XML tag into my HTML file in order <strong>to show some block. By block, I meant that I want to use blocky features.</strong> But unfortunately, I am unable to show those block into my view. I am using the Django framework.
  I have tried and wasted more than 2 days regarding this issue.</em>
  It will be helpful if someone can suggest something to work with XML and blockly into HTML.</p>
  
  <p><strong>I am adding my code in the following.</strong></p>
  
  <pre><code>&lt;html&gt;
   &lt;head&gt;
   &lt;meta charset="utf-8"&gt;
   &lt;title&gt;&lt;/title&gt;
  
   &lt;/head&gt;
   &lt;body&gt;
  
  &lt;p&gt;
    &lt;button onclick="showCode()"&gt;Show Python&lt;/button&gt;
    &lt;button onclick="runCode()" id="runcode"&gt;Run Python&lt;/button&gt;
    &lt;button onclick="save()" id="save"&gt;Save Combination&lt;/button&gt;
    &lt;button onclick="restore()" id="restore"&gt;Restore&lt;/button&gt;
  &lt;/p&gt;
  &lt;div id="blocklyDiv"&gt;&lt;/div&gt;
  &lt;xml id="toolbox"&gt;
  
    &lt;category name="Logic" &gt;
      &lt;block type="controls_if"&gt;&lt;/block&gt;
      &lt;block type="logic_compare"&gt;&lt;/block&gt;
      &lt;block type="logic_operation"&gt;&lt;/block&gt;
      &lt;block type="logic_negate"&gt;&lt;/block&gt;
      &lt;block type="logic_boolean"&gt;&lt;/block&gt;
      &lt;block type="do_it"&gt;&lt;/block&gt;
    &lt;/category&gt;
  
    &lt;category name="Loops" &gt;
      &lt;block type="controls_repeat_ext"&gt;
        &lt;value name="TIMES"&gt;
          &lt;block type="math_number"&gt;
            &lt;field name="NUM"&gt;10&lt;/field&gt;
          &lt;/block&gt;
        &lt;/value&gt;
      &lt;/block&gt;
      &lt;block type="controls_whileUntil"&gt;&lt;/block&gt;
    &lt;/category&gt;
  
    &lt;category name="Math" &gt;
      &lt;block type="math_number"&gt;
        &lt;field name="NUM"&gt;123&lt;/field&gt;
      &lt;/block&gt;
      &lt;block type="math_arithmetic"&gt;&lt;/block&gt;
      &lt;block type="math_single"&gt;&lt;/block&gt;
    &lt;/category&gt;
  
    &lt;category name="Text" &gt;
      &lt;block type="text"&gt;&lt;/block&gt;
      &lt;block type="text_length"&gt;&lt;/block&gt;
      &lt;block type="text_print"&gt;&lt;/block&gt;
    &lt;/category&gt;
  
  
  &lt;/xml&gt;
  </code></pre>