[code="java"]
你在columns里面定义

columns: [
{
property: '',
label: '',
sortable: true
},
{
property: 'countrycode',
label: 'Country',
sortable: true
},
{
property: 'population',
label: 'Population',
sortable: true
},
{
property: 'fcodeName',
label: 'Type',
sortable: true
}
],

[/code]