javascript 没有参考的浅拷贝

Posted 2021-05-03

/*
  Example 1: Object.Assign();
*/
let obj = { a: 1, b: 2 };
// Use an empty object to prevent a reference
let objCopy = Object.assign({}, obj);
// result - { a: 1, b: 2 
console.log(objCopy); 

/*
  Example 2: Spread Operator ...obj
*/
let obj2 = { a: 1, b: 2 };
let cloned = { ...obj2, b: true };
console.log(cloned)