const p={‘id‘:10,‘name‘:‘张三‘,‘score‘:new Arrey(100,‘数学‘，90)}
const deepClone=function(obj){
  const newObj=Array.isArray(obj)? []:{};
  for(let key in obj){
     const template=typeof obj[key]==‘object‘? deepClone(obj[key]) : obj[key]
     newObj[key]=template
  }
retuen newObj
};

const p2=deepClone(p);
p2.score[0]=99;
console.log(p2);
console.log(p)