title: Uncaught TypeError: Cannot call method 'request' of undefined in sencha touch2 external webservice
body: <p>Hi i am new to sencha touch2. i have to consume external web service. i have written code as below in console it is giving error like this <strong>Uncaught TypeError: Cannot call method 'request' of undefined</strong>. what is the problem, please provide the solution. Thank you</p>
  
  <pre><code>Ext.util.JSONP.request({
      url: 'http://localhost/SLS.BRND.Services/Service1.asmx/Helloworld',
      params: {
          method: 'Helloworld',
          format: 'json',
          callback: 'callback'
      },
  
      success: function(response) {
          alert('Working!')
          console.log(response);
      },
      failure: function(response) {
          alert('Not working!')
          console.log(response);
      }
  });​
  </code></pre>