js 深拷贝

let obj = {

name: '张三',

user: {

name: 'hdcms',

},

data: [],

};

function copy(object) {

let obj = object instanceof Array ? [] : {};

for (const [k, v] of Object.entries(object)) {

obj[k] = typeof v == 'object' ? copy(v) : v;

}

return obj;

}

let ls = copy(obj);

ls.data.push('李四');

console.log(JSON.stringify(ls, null, 2));

console.log(JSON.stringify(obj, null, 2));