将巨大的 if 语句变量重构为数组

Question

我想将这些变量重构为数组，因为它看起来很臃肿，但不知道这样做的最佳做法，因为它们太多了。请看一看，让我知道你认为我应该如何去做。VS_group = "group";if (VS_group == "group") {                    V1_IC11 = getAnswerCode('INBOARD_111_COUNT');                    V1_IC12 = getAnswerCode('INBOARD_112_COUNT');                    V1_IC13 = getAnswerCode('INBOARD_113_COUNT');                    V1_IC14 = getAnswerCode('INBOARD_114_COUNT');                    V1_IC15 = getAnswerCode('INBOARD_115_COUNT');                    V1_IC16 = getAnswerCode('INBOARD_116_COUNT');                    V1_IC17 = getAnswerCode('INBOARD_117_COUNT');                    V1_IC18 = getAnswerCode('INBOARD_118_COUNT');                    V1_IC19 = getAnswerCode('INBOARD_119_COUNT');                    V1_IC20 = getAnswerCode('INBOARD_120_COUNT');                    V1_IC31 = getAnswerCode('INBOARD_131_COUNT');                    V1_IC32 = getAnswerCode('INBOARD_132_COUNT');                    V1_IC33 = getAnswerCode('INBOARD_133_COUNT');                    V1_IC34 = getAnswerCode('INBOARD_134_COUNT');                    V1_IC35 = getAnswerCode('INBOARD_135_COUNT');                    V1_IC36 = getAnswerCode('INBOARD_136_COUNT');                    V1_IC37 = getAnswerCode('INBOARD_137_COUNT');                    V1_IC38 = getAnswerCode('INBOARD_138_COUNT');                    V1_IC39 = getAnswerCode('INBOARD_139_COUNT');                    V1_IC40 = getAnswerCode('INBOARD_140_COUNT');                    V2_IC11 = getAnswerCode('INBOARD_211_COUNT');                }

Answer 1

只需记下使用两次的两个范围即可。然后循环访问这些范围并将结果保存到对象中以供参考。

const lower = [11, 31];

const upper = [20, 40];

const vs = [1, 2];

const vsGroup = {};

for (let vn = 0; vn < vs.length; vn++) {

  for (let i = 0; i < lower.length; i++) {

    for (let j = lower[i]; j <= upper[i]; j++) {

      vsGroup["V" + vs[vn] + "_IC" + j] = 'getAnswerCode(INBOARD_' + vs[vn] + '' + j + '_COUNT)';

    }

  }

}

console.log(vsGroup);

（getAnswerCode 保留为字符串，只是为了显示调用的外观）

Answer 2

如果您创建一个代码数组，则可以将其映射到答案，如下所示：

const codesINeed = ["INBOARD_111_COUNT", "INBOARD_112_COUNT"];// (etc)

const answerCodes = codesINeed.map(getAnswerCode);

// answerCodes is an array of answer codes with the same order as codesINeed

Answer 3

你可以像这样创建一个数组：

let vs_group = 

[

  {

     "name": "V1_IC11",

     "value": "INBOARD_111_COUNT"

  },

  {

     "name": "V1_IC12",

     "value": "INBOARD_112_COUNT"

  } 

  ...

]

Answer 4

您可以将所有代码放在一个数组中，并对其进行映射，以为每个代码创建一个对象，并具有代码和相关答案。这样，您就不会忘记哪个答案与哪个代码一起使用。

// sample function for demo

function getAnswerCode(x) {

  return "answer for " + x;

}

const codes = ['INBOARD_111_COUNT',

'INBOARD_112_COUNT',

'INBOARD_113_COUNT'] // and the rest

const answers = codes.map(code => { return { code, answer: getAnswerCode(code)  }})

console.log(answers);

// You can later get what you need using filter:

const answerFor112 = answers.filter(a => a.code === 'INBOARD_112_COUNT')[0].answer;

console.log("Sample answer requested: " + answerFor112);