灏天阁

自定义对象实例之间的相同性与合并

· Yin灏

判断两个对象实例的数据是否完全相同

console.log(Object.is('mars', 'Mars')); // false

console.log(Object.is('Mar' + 's', 'Mars')); // true

console.log(Object.is(document.body, document.body)); // true

console.log(Object.is([], [])); // false

console.log(Object.is(['good', 'day'], ['good', 'day'])); // false

var profile01 = { name: 'Jasper' };
var profile02 = { name: 'Jasper' }
console.log(Object.is(profile01, profile02)); // false

console.log(Object.is(null, null)); // true

console.log(Object.is(null, undefined)); // false

console.log(Object.is(undefined, undefined)); // true

console.log(Object.is(NaN, 0 % 0)); // true

console.log(Object.is(0, -0)); // false

console.log(Object.is(-0, -0)); // true

合并多个对象实例的所有成员

通过内置函数 Object.assign() 可以将过个对象实例的所有成员（属性和函数），合并至特定的对象中。

var profile = {
  name: 'Sean',
  gender: 'male',
  age: 25
};

var job = {
  department: 'IT',
  position: 'software engineer',
  mothly_salary: '10000'
};

var info = {
  log_time: new Date().toLocaleString()
}

// 将 对象实例 profile 和 job 合并到 info 对象实例中
Object.assign(info, profile, job);

console.log(info);
/*
  {
      "log_time": "2021/6/24 下午2:37:46",
      "name": "Sean",
      "gender": "male",
      "age": 25,
      "department": "IT",
      "position": "software engineer",
      "mothly_salary": "10000"
  }
*/

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