js对象深克隆
let obj={
a:1,
b:2,
c:3
}
//方法1
let obj1=JSON.parse(JSON.stringify(obj))
obj1.a=10
console.log(obj);
console.log(obj1);
//方法2
function deepClone(obj){
var newObj= obj instanceof Array?[]:{};
for(var i in obj){
newObj[i]=typeof obj[i]=='object'?
deepClone(obj[i]):obj[i];
}
return newObj;
}
let obj2=deepClone(obj)
obj2.b=20
console.log(obj);
console.log(obj2);