深浅拷贝代码实现

1、浅拷贝：

function shallowClone(obj){
    let cloneObj = {}
  for(let i in obj){
      cloneObj[i] = obj[i]
  }
  return cloneObj
}

2、深拷贝：

function deepClone(obj){
    var result 
  if(typeof obj === 'object'){
      result = obj.constructor === Array?[]:{}
    for(var i in obj){
        result[i] = typeof obj[i] === 'object' ? deepClone(obj[i]):obj[i]
    }
  }else{
      result = obj
  }
  return result 
}