小程序自定义json省市区怎么写，因后台需要这个json的ID才能传参
数据格式如下：
const cityData = [
{
"id": 1,
"name": "北京市",
"level": 1,
"pinyin": "beijing",
"city": [
{
"id": 2,
"name": "北京市",
"level": 2,
"pinyin": "beijing",
"area": [
{
"id": 3,
"name": "东城区",
"level": 3,
"pinyin": "dongcheng"
},
{
"id": 4,
"name": "西城区",
"level": 3,
"pinyin": "xicheng"
},
{
"id": 5,
"name": "朝阳区",
"level": 3,
"pinyin": "chaoyang"
},
{
"id": 6,
"name": "丰台区",
"level": 3,
"pinyin": "fengtai"
},
{
"id": 7,
"name": "石景山区",
"level": 3,
"pinyin": "shijingshan"
},
{
"id": 8,
"name": "海淀区",
"level": 3,
"pinyin": "haidian"
},
{
"id": 9,
"name": "门头沟区",
"level": 3,
"pinyin": "mentougou"
},
{
"id": 10,
"name": "房山区",
"level": 3,
"pinyin": "fangshan"
},
{
"id": 11,
"name": "通州区",
"level": 3,
"pinyin": "tongzhou"
},
{
"id": 12,
"name": "顺义区",
"level": 3,
"pinyin": "shunyi"
},
{
"id": 13,
"name": "昌平区",
"level": 3,
"pinyin": "changping"
},
{
"id": 14,
"name": "大兴区",
"level": 3,
"pinyin": "daxing"
},
{
"id": 15,
"name": "怀柔区",
"level": 3,
"pinyin": "huairou"
},
{
"id": 16,
"name": "平谷区",
"level": 3,
"pinyin": "pinggu"
},
{
"id": 17,
"name": "密云县",
"level": 3,
"pinyin": "miyun"
},
{
"id": 18,
"name": "延庆县",
"level": 3,
"pinyin": "yanqing"
}
]
}
]
},
{
"id": 19,
"name": "天津市",
"level": 1,
"pinyin": "tianjin",
"city": [
{
"id": 20,
"name": "天津市",
"level": 2,
"pinyin": "tianjin",
"area": [
{
"id": 21,
"name": "和平区",
"level": 3,
"pinyin": "heping"
},
{
"id": 22,
"name": "河东区",
"level": 3,
"pinyin": "hedong"
},
{
"id": 23,
"name": "河西区",
"level": 3,
"pinyin": "hexi"
},
{
"id": 24,
"name": "南开区",
"level": 3,
"pinyin": "nankai"
},
{
"id": 25,
"name": "河北区",
"level": 3,
"pinyin": "hebei"
},
{
"id": 26,
"name": "红桥区",
"level": 3,
"pinyin": "hongqiao"
},
{
"id": 27,
"name": "东丽区",
"level": 3,
"pinyin": "dongli"
},
{
"id": 28,
"name": "西青区",
"level": 3,
"pinyin": "xiqing"
},
{
"id": 29,
"name": "津南区",
"level": 3,
"pinyin": "jinnan"
},
{
"id": 30,
"name": "北辰区",
"level": 3,
"pinyin": "beichen"
},
{
"id": 31,
"name": "武清区",
"level": 3,
"pinyin": "wuqing"
},
{
"id": 32,
"name": "宝坻区",
"level": 3,
"pinyin": "baodi"
},
{
"id": 33,
"name": "滨海新区",
"level": 3,
"pinyin": "binhaixinqu"
},
{
"id": 34,
"name": "宁河县",
"level": 3,
"pinyin": "ninghe"
},
{
"id": 35,
"name": "静海县",
"level": 3,
"pinyin": "jinghai"
},
{
"id": 36,
"name": "蓟县",
"level": 3,
"pinyin": "jixian"
}
]
}
]
}
]
