如何排除对象的某些属性

Question

我是 JavaScript 新手我有一个想要排除 2 个键的对象："age":20和"university":"HCC"。因此，我想查看"name:"Sam"和"class":55作为对象中唯一的属性。var b = {     "name":"Sam",    "age":20,    "university":"HCC",    "class":55}

Answer 1

要从对象中排除属性，您可以使用简单的delete：

var b = { 

    "name":"Sam",

    "age":20,

    "university":"HCC",

    "class":55

};

delete b.age;

delete b.university;

console.log(b);

如果您也想检查值是否相同，您可以使用reducewith Object.entries：

var b = { 

    "name":"Sam",

    "age":20,

    "university":"HCC",

    "class":55

};

const res = Object.entries(b).reduce((a, [k, v]) => {

  if (!((k == "age" && v == 20) || (k == "university" && v == "HCC"))) {

    a[k] = v;

  }

  return a;

}, {});

  

console.log(res);