Javascript深拷贝

  function deepCopy(data){
    const result = Array.isArray(data) ? [] : (typeof data === 'function' ? data.bind() : {})
    for(let i in data){
      if(data.hasOwnProperty(i)){
        if(typeof data[i] === 'object'){
          result[i] = deepCopy(data[i])
        }else if(typeof data[i] === 'function'){
          result[i] = data[i].bind(result)
        }else{
          result[i] = data[i]
        }
      }
    }
    return result
  }