svelte - Svelte嵌套Json中的每个函数

Question

我有嵌套的 JSON 数组

let car = [
{
    name: "BMW",
    detail: [
        {name: headlight, type: flame},
        {name: taillight, type: spark},
    ],
},
{
    name: "Merced Benz",
    detail: [
        {name: headlight, type: spark},
        {name: taillight, type: flame},
    ],
},]

当我打电话时它会显示汽车名称 {#each car as cars} <p>{cars.name}</p> {/each}

但是当我打电话给{cars.detail}它的[object Object] 时候，当我打电话给{cars.detail.name}它的时候Undefined

我想称呼每一个细节的名字

请帮我在 svelte 上使用这个每个功能谢谢你

标签： svelte

Answer 1

由于detail是一个数组，因此您还必须使用另一个 each 块来迭代它。

示例（REPL）

<script>
  let cars = [
    {
      name: "BMW",
      detail: [
        { name: "headlight", type: "flame" },
        { name: "taillight", type: "spark" }
      ]
    },
    {
      name: "Mercedes-Benz",
      detail: [
        { name: "headlight", type: "spark" },
        { name: "taillight", type: "flame" }
      ]
    }
  ];
</script>

{#each cars as car}
  <div>{car.name}</div>
  {#each car.detail as detail}
    <div>{detail.name}: {detail.type}</div>
  {/each}
{/each}