var?data?=?{
????"name":?"中國(guó)",
????"province":?[{
????????"name":?"黑龍江",
????????"cities":?{
????????????"city":?["哈爾濱",?"大慶"]
????????}
????},?{
????????"name":?"廣東",
????????"cities":?{
????????????"city":?["廣州",?"深圳",?"珠海"]
????????}
????},?{
????????"name":?"臺(tái)灣",
????????"cities":?{
????????????"city":?["臺(tái)北",?"高雄"]
????????}
????},?{
????????"name":?"新疆",
????????"cities":?{
????????????"city":?["烏魯木齊"]
????????}
????}]
};
//方式一
var?provinces?=?data.province;
for(var?i=?0,len=provinces.length;i<len;i++){
????var?citys?=?provinces[i].cities.city;
????console.log('-----------------'+provinces[i].name+'--------------')
????for(var?j=?0,jlen=citys.length;j<jlen;j++){
????????console.log(citys[j]);
????}
}

//方式2
var?citys2=[];
for(var?x=?0,xlen=data.province.length;x<xlen;x++){
????citys2?=?citys2.concat(data.province[x].cities.city)
}
console.log(citys2);

不知道你想要哪一個(gè)？