JavaScript 작업 JSON 대상 찾기, 삭제, 수정

  /**
   * 
   *   JSON         
   */
  function getJSONData(keys, data ){
    let [key, ...child] = keys
    if (keys.length == 1) {
      // delete datas[key]       ，              
      return datas[key]
    } else {
      let {
        [key]: data
      } = datas
      delJSONData(child, data)
    }
  }

  /**
   * datas  json  ，keys json   key   
   */
  function delJSONData(keys,type, datas) {
    let [key, ...child] = keys
    if (keys.length == 1) {
       if(type=='array'){
           datas.splice(key, 1) //         ，     delete
       }else{
           delete datas[key] //       ，              
       }
    } else {
      let {
        [key]: data
      } = datas
      delJSONData(child,type, data)
    }
  }

  /**
   *   JSON        
   */
  function setJSONData(keys, value, datas) {
    let [key, ...child] = keys
    if (keys.length == 1) {
      datas[key] = value
    } else {
      let {
        [key]: data
      } = datas
      setJSONData(child, value, data)
    }
  }

   let json ={
        "teacher": [
            {
               "name": "jordan",
                "sex": "m",
                "age": "40"
            },
            {
                "name": "bryant",
                "sex": "m",
                "age": "28"
            },
            {
                "name": "McGrady",
                "sex": "m",
                "age": "27"
            }
        ]
    }

    let pareType = 'array'
    let keystr = 'teacher.0.name'  //teacher    key，0 teacher        ，name         
    //   name = jordan 
    let name = getJSONData(keystr.split('.'),json)
    console.log(name)
    //   name = jordan  
    delJSONData(keystr.split('.'),pareType,json)
    console.log(json)

    let name = "123"
    setJSONData(keystr.split('.'),name,json) //    
    console.log(json)