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vue.js遍历map的方法：vue使用【v-for】遍历Map，代码为【<div class="area" v-for="(item, key) of cities" :key="key">】。
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vue.js遍历map的方法：
对象数据如下：
"cities": {"A": [{"id": 56,"spell": "aba","name": "阿坝"}, {"id": 57,"spell": "akesu","name": "阿克苏"}],"B": [{"id": 58,"spell": "baiyin","name": "白银"}, {"id": 59,"spell": "bangbu","name": "蚌埠"}],"C": [{"id": 60,"spell": "chengdu","name": "成都"}, {"id": 61,"spell": "cangzhou","name": "沧州"}]
遍历方法如下：
<div class="area" v-for="(item, key) of cities" :key="key"> <div class="title border-topbottom">{{key}}</div> <div class="item-list"> <div class="item border-bottom" v-for="innerItem of item" :key="innerItem.id">{{innerItem.name}}</div> </div> </div>
关键就是 v-for="(item, key) of cities"，相当于Map结构的 (key, value)
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