JavaScript如何遍历JSON并向指定对象添加值构造目标数组

实现逻辑 #

直接遍历响应体中errorParameters数组，筛选携带orderItemIds字段的报错条目，按原顺序存入新数组即可。

完整代码 #

const errorParams = mockResponse.errors[0].errorParameters;
const result = [];

errorParams.forEach(param => {
  // 筛选包含orderItemIds的报错对象，可根据需求新增字符串匹配校验
  if (param.orderItemIds) {
    result.push({
      errorMessage: param.errorMessage,
      orderItemIds: param.orderItemIds,
      availableShipModeId: param.availableShipModeId
    })
  }
})

// 打印验证结果
console.log(result)

输出结果示例 #

[
  {
    errorMessage: "Ship to Home not available for these orderItemId",
    orderItemIds: [ 10315031, 10315032 ],
    availableShipModeId: 13203
  },
  {
    errorMessage: "Pickup At Seller not available for these orderItemIds",
    orderItemIds: [ 10222222, 10333333 ],
    availableShipModeId: 13203
  }
]

可选优化 #

如果需要严格匹配指定报错信息，避免其他携带orderItemIds的异常条目被误收录，可以新增字符串匹配判断：

// 替换原有if判断即可
const validKeywords = ['Ship to Home', 'Pickup At Seller'];
if (param.orderItemIds && validKeywords.some(keyword => param.errorMessage.includes(keyword))) {
  result.push({
    errorMessage: param.errorMessage,
    orderItemIds: param.orderItemIds,
    availableShipModeId: param.availableShipModeId
  })
}

内容的提问来源于stack exchange，提问作者ProgrammingNoob221