如何在 React 中映射嵌套数据对象？

Question

如何进一步访问此对象数组中的“名称”和“描述”？例如，我的目标是呈现两个按钮，上面写着 Term 1 和 Term 2？我将有 3 张幻灯片，每张幻灯片都有不同的 terms/definitions。所以我考虑制作一个组件，我可以在其中通过引用要呈现的术语集的道具传递索引。因此每张幻灯片将显示一组不同的术语名称和定义。

const TermData = [
  {
    index: 1,
    slideTitle: "Key Terms (1 of 3)",
    terms: [
      {
        name: "Term 1",
        definition: "Definition 1",
      },
      {
        name: "Term 2 ",
        definition: " definition 2",
      },
    ],
  },
  {
    index: 2,
    slideTitle: "Key Terms (2 of 3)",
    terms: [
      {
        name: "Term 1",
        definition: "Definition 1",
      },
      {
        name: "Term 2 ",
        definition: " definition 2",
      },
    ],
  },
];

//MAP THROUGH THE DATA - RENDER THE BUTTONS WITH TERM1 and TERM2 TITLE//
  const termSet = TermData.map((set, index) => {
    return (
      <>
        <button className="terms-button" key={index} onClick={() => handleClick(index)}>
          {set.terms[0].name}
        </button>
      </>
    );
  });

return (
    <Fragment>
        <div>
        {termSet}
        </div>
    </Fragment>
  );

Answer 1

您必须将以下方法更改为

//MAP THROUGH THE DATA - RENDER THE BUTTONS WITH TERM1 and TERM2 TITLE//
  const termSet = TermData[0].terms.map((set, index) => {
  return (
    <>
      <button className="terms-button" key={index}>
        {set.name}
      </button>
    </>
  );
});

Codesandbox这里

如何在 React 中映射嵌套数据对象？

How to map a nested data object in React?

arrays

rendering

object

reactjs

array.prototype.map