title: Get specific column when Kendo Grid row is selected
body: <p>I'm quite new to Kendo UI and would appreciate if someone could give an advice.
  I need to get a value of specific column when my grid row is selected. Till now I can get the values of all columns of selected row:</p>
  
  <pre><code>$("#grid").kendoGrid({
  ...
  change:onChange,
  columns: [{
              field: "Number",                
              title: 'Number',
  
          }, {
              field: "Title",
              title: "Title",               
          }]
  });
  </code></pre>
  
  <p>onChange function: </p>
  
  <pre><code>function onChange(arg) {
          var selected = $.map(this.select(), function (item) {
              return $(item).text();
          });
  
          alert(selected);
      }
  </code></pre>
  
  <p>I need to take the selected value of <code>Number</code> column. Something like <code>$(item[name='Number']).text();</code>
  I know I could parse the string but I guess there is another way.</p>
  
  <p>Thanks a lot</p>