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<!DOCTYPE html>
<html>
<body>
<h1>JavaScript 对象</h1>
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<h2>Object.assign() 方法</h2>
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<p id="demo"></p>
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<script>
// 创建目标对象
const person1 = {
  firstName: "Bill",
  lastName: "Gates",
  age: 19,
  eyeColor: "blue"
};
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// 创建源对象
const person2 = {firstName: "Anne", lastName: "Smith"};
​
// 将源对象的属性赋值到目标对象
Object.assign(person1, person2);
​
// 显示目标对象
let text = Object.entries(person1); // 获取目标对象的键值对数组
document.getElementById("demo").innerHTML = text; // 将结果显示在页面上
</script>
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</body>
</html>
​