dly667的博客

存在以下两种情况：example 1: let obj = {a:1}; console.log(obj); //{a:2} obj['a'] = 2;example 2: let num = 1; console.log(num); //1 num = 2; 解决方案 1：let obj = {a:1}; console.log(JSON.parse(JSON.stringify(obj)));