Ext Grid data添加Tooltip提示信息

1.

 

{header:"演员",dataIndex:"actor",sortable:true,width:80,renderer:showTip},

2.

function showTip(data, metadata, record, rowIndex, columnIndex, store){

var title=moviesColumn.getColumnHeader(columnIndex);

metadata.attr = 'ext:qtitle="'+title+'" ext:qtip="' + data + '"';   

        return data;

}