ExtJS grid中展示行数据提示信息tip

ExtJS grid中显示行数据提示信息tip

 custGrid.on('render', function(grid) {          var store = grid.getStore();         var view = grid.getView();              grid.tip = new Ext.ToolTip({              target: view.mainBody,                 delegate: '.x-grid3-row',            trackMouse: true,                renderTo: document.body,                   listeners: {                  beforeshow: function updateTipBody(tip) {                      var rowIndex = view.findRowIndex(tip.triggerElement);                      var record = store.getAt(rowIndex);                   tip.body.dom.innerHTML = 'ID:'+record.get('custId')+'<br/>NO:'+record.get('custName')+'<br/>Address:'+record.get('address')+'<br/>Mobile:'+record.get('mobile');                  }              }          });      });