export let area= [
      {
      value: 1,
      label: '东南',
      children: [{
  value: 2,
  label: '上海',
  children: [
    { value: 3, label: '普陀' },
    { value: 4, label: '黄埔' },
    { value: 5, label: '徐汇' }
  ]
}, {
  value: 7,
  label: '江苏',
  children: [
    { value: 8, label: '南京' },
    { value: 9, label: '苏州' },
    { value: 10, label: '无锡' }
  ]
}, {
  value: 12,
  label: '浙江',
  children: [
    { value: 13, label: '杭州'},
    { value: 14, label: '宁波' },
    { value: 15, label: '嘉兴' }
  ]
}]
},
{
value: 17,
label: '西北',
children: [{
  value: 18,
  label: '陕西',
  children: [
    { value: 19, label: '西安' },
    { value: 20, label: '延安' }
  ]
}, {
  value: 21,
  label: '新疆维吾尔族自治区',
  children: [
    { value: 22, label: '乌鲁木齐' },
    { value: 23, label: '克拉玛依' }
  ]
}]
}]