title: TextBox ComboBox using Javascript
body: <p>I need to create a comboBox but my ComboBox is not showing whatever I do</p>
  
  <p>Here's the JSFiddle -> <a href="http://jsfiddle.net/K5bmM/" rel="nofollow">http://jsfiddle.net/K5bmM/</a></p>
  
  <p>I hope someone can give me a hand :( Thanks</p>
  
  <pre><code>            layerName = new Ext.form.TextField({
              name: "layer-edit",
              emptyText: "(名称)",
              allowBlank: false
          });
          layerName.render('layer-edit');
  
  
          var storeData = [
              ['2', 'ログインユーザ専用']
          ]
  
  
  
          var comboEdit = new Ext.form.comboBox) {
              store: EditauthStore,
              editable: false,
              emptyText: "(種類)",
              displayField: "value",
              valueField: "key",
              mode: "local",
              triggerAction: "all",
              forceSelection: true
          });
  
          comboEdit.render('authority');
          comboEdit.setValue('2');
  
          EditauthStore = new Ext.data.SimpleStore({
              fields: ['key', 'value'],
              data: storeData
          });
  </code></pre>