title: An expandable and collapsible tree
body: <p>Please help me how to create an expandable and collapsible tree with JavaScript with JSON feed data shown in the following format.Need some help with this problem. </p>
  
  <pre><code>var dataSource = ({
              "Items": ({
                  "Pen": ({}),
                  "Pencil": ({
                      "Natraj": "Natraj Pencil",
                      "Afsara": "Afsara Pencil",
                      "Erason": "natraj Erason"
                  }),
  
                  "Book": ({
                      "Novel": "ShakeSpear Novel"
                  }),
              })
          });
  </code></pre>