删除数组内的对象属性，数组内的对象属性，不在数组上循环

Question

我有一个包含对象的数组，我想从对象中删除所有具有键“isCorrect”的属性，而不在主数组上循环或将其值更改为 false。

[ { "arrangement": 1, "question": "mijn", "answers": [ { "answer": "nmiou", "isCorrect": true }, { "answer": "nkj", "isCorrect": false }, { "answer": "nk", "isCorrect": false }, { "answer": "jln", "isCorrect": false } ] }, { "arrangement": 2, "question": "kjn", "answers": [ { "answer": "kjn", "isCorrect": true }, { "answer": "kj", "isCorrect": false }, { "answer": "nkj", "isCorrect": false }, { "answer": "n", "isCorrect": false } ] }, { "arrangement": 3, "question": "jn", "answers": [ { "answer": "n", "isCorrect": true }, { "answer": "n", "isCorrect": false }, { "answer": "n", "isCorrect": false }, { "answer": "nn", "isCorrect": false } ] }, { "arrangement": 4, "question": "n", "answers": [ { "answer": "n", "isCorrect": true }, { "answer": "n", "isCorrect": false }, { "answer": "n", "isCorrect": false }, { "answer": "n", "isCorrect": false } ] }, { "arrangement": 5, "question": "n", "answers": [ { "answer": "n", "isCorrect": true }, { "answer": "n", "isCorrect": false }, { "answer": "n", "isCorrect": false }, { "answer": "n", "isCorrect": false } ] }, { "arrangement": 6, "question": "nn", "answers": [ { "answer": "n", "isCorrect": true }, { "answer": "n", "isCorrect": false }, { "answer": "n", "isCorrect": false }, { "answer": "n", "isCorrect": false } ] }, { "arrangement": 7, "question": "n", "answers": [ { "answer": "n", "isCorrect": true }, { "answer": "n", "isCorrect": false }, { "answer": "n", "isCorrect": false }, { "answer": "n", "isCorrect": false } ] }, { "arrangement": 8, "question": "n", "answers": [ { "answer": "n", "isCorrect": true }, { "answer": "nkokj", "isCorrect": false }, { "answer": "nj", "isCorrect": false }, { "answer": "nkj", "isCorrect": false } ] }, { "arrangement": 9, "question": "n", "answers": [ { "answer": "njk", "isCorrect": true }, { "answer": "nkjn", "isCorrect": false }, { "answer": "jk", "isCorrect": false }, { "answer": "nkj", "isCorrect": false } ] }, { "arrangement": 10, "question": "i", "answers": [ { "answer": "i", "isCorrect": true }, { "answer": "ii", "isCorrect": false }, { "answer": "i", "isCorrect": false }, { "answer": "i", "isCorrect": false } ] } ]

它可以通过循环来完成，但它需要时间和性能，

 let primaryArray = [ { "arrangement": 3, "question": "jn", "answers": [ { "answer": "n", "isCorrect": true }, { "answer": "n", "isCorrect": false }, { "answer": "n", "isCorrect": false }, { "answer": "nn", "isCorrect": false } ] }, { "arrangement": 4, "question": "n", "answers": [ { "answer": "n", "isCorrect": true }, { "answer": "n", "isCorrect": false }, { "answer": "n", "isCorrect": false }, { "answer": "n", "isCorrect": false } ] }, { "arrangement": 5, "question": "n", "answers": [ { "answer": "n", "isCorrect": true }, { "answer": "n", "isCorrect": false }, { "answer": "n", "isCorrect": false }, { "answer": "n", "isCorrect": false } ] }, { "arrangement": 6, "question": "nn", "answers": [ { "answer": "n", "isCorrect": true }, { "answer": "n", "isCorrect": false }, { "answer": "n", "isCorrect": false }, { "answer": "n", "isCorrect": false } ] }, { "arrangement": 7, "question": "n", "answers": [ { "answer": "n", "isCorrect": true }, { "answer": "n", "isCorrect": false }, { "answer": "n", "isCorrect": false }, { "answer": "n", "isCorrect": false } ] }, { "arrangement": 8, "question": "n", "answers": [ { "answer": "n", "isCorrect": true }, { "answer": "nkokj", "isCorrect": false }, { "answer": "nj", "isCorrect": false }, { "answer": "nkj", "isCorrect": false } ] }, { "arrangement": 9, "question": "n", "answers": [ { "answer": "njk", "isCorrect": true }, { "answer": "nkjn", "isCorrect": false }, { "answer": "jk", "isCorrect": false }, { "answer": "nkj", "isCorrect": false } ] }, { "arrangement": 10, "question": "i", "answers": [ { "answer": "i", "isCorrect": true }, { "answer": "ii", "isCorrect": false }, { "answer": "i", "isCorrect": false }, { "answer": "i", "isCorrect": false } ] } ] primaryArray.map((q)=>{ q.answers[0].isCorrect = false; }) console.log(primaryArray)

Answer 1

要从数组中的对象中删除 isCorrect 属性，您可以使用 map 方法遍历数组并使用 delete 运算符从每个对象中删除该属性。

像这样：

const updatedArray = array.map(item => {
  delete item.answers.isCorrect;
  return item;
});

这应该从“答案”中删除“isCorrect”而不改变我认为的原始数组......