es6语法克隆对象和数组

1.克隆对象:

const json1={"a":"1"};
let jsonnew={...json1};
jsonnew.b="2";
console.log(jsonnew,json1);

2.克隆数组:

const arr1=["1"];
let arrnew=[...arr1];
arrnew.push("2");
console.log(arrnew,arr1);