使用json数据实现简单的三级联动

json数据格式:javascript var data = { "province": ["广东省","广东省","广东省","广东省","广东省","广东省","广东省"], "city":{ "广东省":["韶关市","韶关市","韶关市","韶关市","韶关市"], "山东省":["韶关市","韶关市","韶关市","韶关市","韶关市"], "广东省":["韶关市","韶

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