Cascader 多级联动

规则

{
    type:"cascader",
    title:"所在区域",
    field:"address",
    value:['陕西省','西安市','新城区'],
    props:{
        options:[{
            value: 'beijing',
            label: '北京',
            children: [
                {
                    value: 'gugong',
                    label: '故宫'
                },
                {
                    value: 'tiantan',
                    label: '天坛'
                },
                {
                    value: 'wangfujing',
                    label: '王府井'
                }
            ]
        }, {
            value: 'jiangsu',
            label: '江苏',
            children: [
                {
                    value: 'nanjing',
                    label: '南京',
                    children: [
                        {
                            value: 'fuzimiao',
                            label: '夫子庙',
                        }
                    ]
                },
                {
                    value: 'suzhou',
                    label: '苏州',
                    children: [
                        {
                            value: 'zhuozhengyuan',
                            label: '拙政园',
                        },
                        {
                            value: 'shizilin',
                            label: '狮子林',
                        }
                    ]
                }
            ]
        }]
    }
}

Props参考:TDesign_Cascader

value :Array