vue对象的深度克隆方式

var olbObj = {a:1};
var str = JSON.stringify(obj); //序列化对象
var newobj = JSON.parse(str); //还原
//相当于
var newObj = JSON.parse(JSON.stringify(olbObj ))

var a = {a:0}
var b = {...a}

function newobj(obj) {
  var str, newobj = obj.constructor === Array ? [] : {};
  //constructor 属性返回对创建此对象的数组函数的引用。创建相同类型的空数据
  if (typeof obj !== 'object') {
    return;
  } else {
    for (var i in obj) {
      if (typeof obj[i] === 'object'){//判断对象的这条属性是否为对象
        newobj[i] = newObj(obj[i]);//若是对象进行嵌套调用
      }else{
        newobj[i] = obj[i];
      }
    }
  }
  return newobj;//返回深度克隆后的对象
}

let b = JSON.parse(JSON.stringify(a))

//深克隆 
export const deepClone = (source) => {
  var sourceCopy = source instanceof Array ? [] : {}
  for (var item in source) {
    sourceCopy[item] = typeof source[item] === 'object' ? deepClone(source[item]) : source[item]
  }
  return sourceCopy
}
let b = deepClone (a)