浅拷贝 function copy(obj) { let newobj = {} for (let i in obj) { newobj[i] = obj[i] } return newobj } let obj1 = { name: '小米', age: 2, } let obj2 = copy(obj1) obj2.name = '小红' console.log(obj1) console.log(obj2) 深拷贝 function copy(obj) { let newobj = {} for (let i in obj) { if (obj[i] instanceof Object) { newobj[i] = copy(obj[i]) } else { newobj[i] = obj[i] } } return newobj } let obj1 = { name: '小米', age: 2, girlFriend: { name: '小红' } } let obj2 = copy(obj1) obj2.girlFriend.name = '小花' console.log(obj1) console.log(obj2)
标签：obj1,obj2,obj,name,newobj,let,拷贝 From： https://www.cnblogs.com/GFM0518/p/16592595.html