m0_58788814的博客

一、浅拷贝 1.方法 let obj = {name:'张三',age:18} let newObj = obj console.log(newObj) // {name:'张三',age:18} 2.应用 ①主要应用于对变量的赋值 3.缺点 let obj = {name:'张三',age:18} let newObj = obj newObj.name='李四' console.log(obj ) // {name:'李四',age:18} console.log(newObj)