如何将json填充到VueJ的dropdownlist中？

如何解决如何将json填充到VueJ的dropdownlist中？

我有这个货币代码api，https://openexchangerates.org/api/currencies.json

如何将json填充到VueJ的dropdownlist中？

这是我目前的代码：

    new Vue({
        el: "#app",data() {
            return {
                currencyFrom: null,loading: true,errored: false
            };
        },mounted() {
            axios
                .get("https://openexchangerates.org/api/currencies.json")
                .then(response => (this.currencyFrom = response))
                .catch(error => {
                    console.log(error);
                    this.errored = true;
                })
                .finally(() => (this.loading = false));
        }
    });

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/axios/0.19.2/axios.min.js"></script>
  
    <div id="app">
        <div v-if="loading">Loading...</div>
        <select class="form-control" name="currency_from_code" id="currency_from_code" v-else>
         <option v-for="currency in currencyFrom"  >{{ currency }}</option>
        </select>
    </div>

它确实能够加载json，但下拉列表不起作用。

解决方法

您应该设置response.data this.currencyFrom = response.data

请参阅axios response schema

new Vue({
        el: "#app",data() {
            return {
                currencyFrom: null,loading: true,errored: false
            };
        },mounted() {
            axios
                .get("https://openexchangerates.org/api/currencies.json")
                .then(response => {this.currencyFrom = response.data})
                .catch(error => {
                    console.log(error);
                    this.errored = true;
                })
                .finally(() => (this.loading = false));
        }
    });

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/axios/0.19.2/axios.min.js"></script>
  
    <div id="app">
        <div v-if="loading">Loading...</div>
        <select class="form-control" name="currency_from_code" id="currency_from_code" v-else>
         <option v-for="currency in currencyFrom"  >{{ currency }}</option>
        </select>
    </div>