刪除數組內的對象屬性，數組內的對象屬性，不在數組上循環

Question

我有一個包含對象的數組，我想從對象中刪除所有具有鍵“isCorrect”的屬性，而不在主數組上循環或將其值更改為 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 } ] } ]

它可以通過循環來完成，但它需要時間和性能，

 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

要從數組中的對象中刪除 isCorrect 屬性，您可以使用 map 方法遍歷數組並使用 delete 運算符從每個對象中刪除該屬性。

像這樣：

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

這應該從“答案”中刪除“isCorrect”而不改變我認為的原始數組......