通过key 寻找数组内对象的某一项

function parseJson(jsonObj, value, key = ‘code‘) {
      const index = jsonObj.findIndex(item =>
        item[key] == value
      )
      if (index) return jsonObj[index]
}

var array = [
      {
        code: 1,
        value: ‘b‘
      },
      {
        code: 2,
        value: ‘a‘
      },
      {
        code: 3,
        value: ‘c‘
      },
      {
        code: 4,
        value: ‘d‘
      },
      {
        code: 5,
        value: ‘e‘
      }
    ]

    console.log(parseJson(array, 5))