如何从 Vue.js 中的 JSON 文件中获取数据？

Question

我有具有这种结构的 'modified_data.json' JSON 文件。

{
"data": [
    [
        {
           "account_id": "  "
           "account_name": "   "
        },
        {
           "account_id": "  "
           "account_name": "   "
        },          
        {
           "account_id": "  "
           "account_name": "   "
        },          
        {
           "account_id": "  "
           "account_name": "   "
        }
     ],
     [
        {
           "account_id": "  "
           "account_name": "   "
        },
        {
           "account_id": "  "
           "account_name": "   "
        },
        {
           "account_id": "  "
           "account_name": "   "
        }
     ],
     [
        {
           "account_id": "  "
           "account_name": "   "
        },
        {
           "account_id": "  "
           "account_name": "   "
        },
        {
           "account_id": "  "
           "account_name": "   "
        }
      ]
   ]
}

我想从每个数组中获取第一个对象的 account_name ......

有没有人可以给我一个解决方案？？

现在我使用 Vue.js 来显示它，我可以用 python 获取每个数据，但是 Vue.js 我还不熟悉......请帮助我:)

Answer 1

好吧，您将不得不添加您为 Vue 编写的代码

如果你在一个 vue 应用程序中，你可以做这样的事情

<script>
      import json from './json/data.json'
      export default{
          data(){
              return{
                  myJson: json
              }
          }
      }
</script>

如果您将它写在 html 页面中。你可以分两步完成。

一是将文件链接添加为脚本

<script src="../file.json"></script>

然后在 vue 脚本部分，您可以将其分配给数据对象。

var ele = new Vue({
     el : "#YourElement", 
    data : ObjName
});

“ObjName”是文件中json对象的名称。

ObjName :
{
"data": [
    [
        {
           "account_id": "  "
           "account_name": "   "
        }

Answer 2

您可以使用计算属性，该属性将反应性地获取account_name每个数组的第一个对象的属性：

const data = {
  "data": [
    [
      {
        "account_id": "11",
        "account_name": "name11"
      },
      {
        "account_id": "12",
        "account_name": "name12"
      },
      {
        "account_id": "13",
        "account_name": "name13"
      },
      {
        "account_id": "14",
        "account_name": "name14"
      }
    ],
    [
      {
        "account_id": "21",
        "account_name": "name21"
      },
      {
        "account_id": "22",
        "account_name": "name22"
      },
      {
        "account_id": "23",
        "account_name": "name23"
      }
    ],
    [
      {
        "account_id": "31",
        "account_name": "name31"
      },
      {
        "account_id": "32",
        "account_name": "name32"
      },
      {
        "account_id": "33",
        "account_name": "name33"
      }
    ]
  ]
}


new Vue({
  el: '#demo',
  data() {
    return {
      data: data.data
    }
  },
  computed: {
    firstAccountNames() {
      return this.data.map(dataSet => dataSet[0].account_name)
    }
  }
})

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="demo">
  <ul>
    <li v-for="name in firstAccountNames">
      {{ name }}
    </li>
  </ul>
</div>