Extjs checkbox Grid勾选时事件

       var sm = new Ext.grid.CheckboxSelectionModel();
        sm.handleMouseDown = Ext.emptyFn;//不响应MouseDown事件
        sm.on('rowselect',function(sm_,rowIndex,record){//行选中的时候
           
        }, this);
        sm.on('rowdeselect',function(sm_,rowIndex,record){//行未选中的时候
           
        }, this);

 

 

    new Ext.grid.CheckboxSelectionModel({
    listeners:{
      'rowselect':function(sm,rowIndex,record){
        console.log('rowselect',rowIndex)
      },
      'rowdeselect':function(sm,rowIndex,record){
        console.log('rowdeselect',rowIndex)
      },
      'selectionchange':function(sm){
        console.log('selectionchange',sm.getSelections().length);
      }
    }