javascript - typescript 或 JavaScript 将嵌套的对象数组转换为键值对

Question

下面的数组是输入和期望各自的 O/P。
如何使用 Typescript 将其作为键值对实现

let arr = [
  {id: "1",
   questions: [
     {question: "HTML Tutorial" },
     {question: "HTML References" }
   ],
    answer : "Hypertext Markup Language is the standard markup language for documents designed to be displayed in a web browser. It can be assisted by technologies such as Cascading Style Sheets and scripting languages such as JavaScript and VBScript."
  },
  {id: "2",
   questions: [
     {question: "HTML Element Reference" },
     {question: "HTML Reference - Browser Support" }
   ],
   answer : "An HTML element is a type of HTML document component, one of several types of HTML nodes. HTML document is composed of a tree of simple HTML nodes, such as text nodes, and HTML elements, which add semantics and formatting to parts of document. Each element can have HTML attributes specified."
  }
];

// Expected Output using Typescript

Array [{ Key: "1", value: "HTML Tutorial, HTML References: Hypertext Markup Language is the standard markup language for documents designed to be displayed in a web browser. It can be assisted by technologies such as Cascading Style Sheets and scripting languages such as JavaScript and VBScript." },
{ Key: "2", value: "HTML Element Reference,HTML Reference - Browser Support : An HTML element is a type of HTML document component, one of several types of HTML nodes. HTML document is composed of a tree of simple HTML nodes, such as text nodes, and HTML elements, which add semantics and formatting to parts of document. Each element can have HTML attributes specified." }]

Answer 1

已经回答了，map()非常适合解决问题。

interface Output {
    key: string;
    value: string;
}

const result: Output[] = arr.map((item) => {
    const output = {
        key: item.id,
        value: `${item.questions.map(elem => elem.question).join(', ')}: ${item.answer}`
    };

    return output;
});

console.log(result)