let obj={
name:"吴小明",
age:24,
love:{
pingpang:true
}
}
let obj1=obj;
obj.name="孙艺珍";
obj.love.pingpang=false;
console.log(obj)
console.log(obj1)
输出结果为：
{name: "孙艺珍", age: 24,love: {pingpang: false}}
aa.html:20 {name: "孙艺珍", age: 24,love: {pingpang: false}}
let obj={ name:"吴小明", age:24, love:{ pingpang:true } } let obj1={...obj}; obj.name="孙艺珍"; obj.love.pingpang=false; console.log(obj) console.log(obj1)
输出结果为：
{name: "孙艺珍", age: 24,love: {pingpang: false}}
aa.html:20 {name: "吴小明", age: 24,love: {pingpang: false}}
所以，let obj1={...obj};的意思是如果obj只有一层数据结构，这样复制的对象没有引用关系。
let obj1=obj;和let obj1={...obj}的区别
原文：https://www.cnblogs.com/wuqilang/p/12380826.html