Question

[{LanguageMedium: "Sinhala Medium"}, {Subject: "English"}, {Type: "Past"}]

从这个数组对象中如何删除对象键所在的对象＆＃34; LanguageMedium＆＃34;

Answer 1

使用for..in循环迭代您的对象键，并在获得匹配时使用delete关键字。

＆＃13;

const obj = { name: 'mary', name: 'john' } 

for (const key in obj) {
  if (obj.hasOwnProperty(key) && obj[key] === 'mary') {
    delete obj[key]
  }
}

console.log(obj)

＆＃13;

Answer 2

您可以使用array#find遍历对象中的键，找出值为Sinhala Medium的键。您可以使用Object.keys()获取密钥。然后，您可以使用delete从对象中删除密钥。

＆＃13;

var obj = { LanguageMedium: "Sinhala Medium", Subject: "English", Type: "Past" },
    key = Object.keys(obj).find(k => obj[k] === 'Sinhala Medium');
delete obj[key];
console.log(obj);

＆＃13;

Answer 3

您可以迭代所有键以匹配要删除的键，如下所示：

＆＃13;

var obj = { LanguageMedium: "Sinhala Medium", Subject: "English", Type: "Past" }

Object.keys(obj).forEach(function(k){
  if (obj[k] == 'Sinhala Medium'){
    delete obj[k];
  }
});
console.log(obj);

＆＃13;

如何从javascript中删除对象和对象数组

3 个答案: