angular - 如何将两个对象数据合并为一个

Question

我需要将两个数据合并为一个。我的示例数据是这样的..

第一条数据

{Address: "Test", City: "test", State: "Test"}

第二数据

{UserId:"John", Name: "John"}

当我使用此方法时 const a = [].concat(this.firstData, this.secondData); 它变成数组而不是组合成一个，示例如下:

(2)[{…}, {…}]

[0]{Address: "Test", City: "test", State: "Test", …}
[1]{UserId:"John", Name: "John", …}

合并成一个应该用什么方法

Answer 1

您可以在两者上使用扩展运算符:

const firstData = {Address: "Test", City: "test", State: "Test"};
const secondData = {UserId:"John", Name: "John"};

const merged = { ...firstData, ...secondData };

console.log(merged)

有用的引用:

• Docs for Variable Declarations/Spread in TypeScript Handbook .
• Docs for JavaScript's Spread Operator (MDN) .