Google App 脚本 - 映射时出错 - TypeError：无法读取未定义的属性“地图”

Question

在社区的指导下，我最近在此处了解了给定 Google 表格的 BatchUpdating 背景颜色。

我试图将其应用于我的实际工作表，但遇到了错误代码。 TypeError: Cannot read property 'map' of undefined

我的测试表中可以正常工作的代码在这里：

var TestArray = Sheets.Spreadsheets.get("1eAq-RbtrCSMRPZ0p7XIpG3vd29yL-3SQ3D3JGyiUhKg", {
   ranges:"TestBackgroundSheet!A1:AD39", fields:"sheets(data(rowData(values(effectiveFormat.backgroundColor))))"
 });
 
 var backgroundColors = TestArray["sheets"][0]["data"][0]["rowData"]
                      .map(row => row["values"]
                      .map(value => value["effectiveFormat"]["backgroundColor"])); 

然后我将此代码复制并粘贴到我的实际项目中。 为了排除故障，我什至将测试项目中的确切工作表复制到实际项目中。 代码在此处列出：

var TestArray = Sheets.Spreadsheets.get("1pcIKNUFmkk0d-UGg1sXl5xbsJC2WhocIHpM3et-CMgo", {
   ranges:"TestBackgroundSheet!A1:AD39", fields:"sheets(data(rowData(values(effectiveFormat.backgroundColor))))"
 });
 
 var backgroundColors = TestArray["sheets"][0]["data"][0]["rowData"]
                      .map(row => row["values"]
                      .map(value => value["effectiveFormat"]["backgroundColor"]));

如您所见，除了不同的 SheetID 之外，代码完全相同。 尽管如此，我仍然收到TypeError: Cannot read property 'map' of undefined Error。

错误代码引用了第 172 行，即.map(value => value["effectiveFormat"]["backgroundColor"]));

编辑：

编辑#2：

包含 Rafa 的代码后，我得到了这个错误代码 -> SyntaxError: Unexpected token ，在位置 1 的 JSON 中（第 177 行，文件“宏”）

包含的代码如下。

var TestArray = Sheets.Spreadsheets.get("1pcIKNUFmkk0d-UGg1sXl5xbsJC2WhocIHpM3et-CMgo", {
      ranges:"TestBackgroundSheet!A1:AD39",
      fields:"sheets(data(rowData(values(effectiveFormat.backgroundColor))))"
    });
     
    var rowData = TestArray["sheets"][0]["data"][0]["rowData"]
    .map(row => row.getValues()).toString()
    
    var backgroundColors = JSON.parse("[" + rowData + "]")
    .map(value => {
         let v = value["effectiveFormat"]
         return v ? v["backgroundColor"] : null
         })

编辑#3：

具有以下代码的 RowData 记录器

for (var x = 0; x < 40; x++) {
      Logger.log(x + JSON.stringify(TestArray["sheets"][0]["data"][0]["rowData"][x]));
    }

我可以看到问题出在 Logger 语句的前四行中。 虽然“测试表”中的空行返回白色背景色的整行（RGB {“green”：1，“red”：1，“blue”：1}）在“Reat Sheet”中，我得到一个空对象对于前 4 行中的 3 行。 我在下面包含了前四行输出。 我不确定为什么会发生这种情况。

实际的：

[20-10-21 08:53:23:591 EDT] 0{}
[20-10-21 08:53:23:593 EDT] 1{"values":[{},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}}]}
[20-10-21 08:53:23:595 EDT] 2{}
[20-10-21 08:53:23:597 EDT] 3{}
[20-10-21 08:53:23:600 EDT] 4{"values":[{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{},{"effectiveFormat":{"backgroundColor":{"red":1,"blue":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{},{"effectiveFormat":{"backgroundColor":{"red":1,"blue":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}}]}

测试：

[20-10-21 05:53:14:167 PDT] 0{"values":[{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"blue":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"blue":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"red":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"blue":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"blue":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"red":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"red":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"blue":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}}]}
[20-10-21 05:53:14:170 PDT] 1{"values":[{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"blue":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"red":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"blue":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"red":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"blue":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"red":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"blue":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}}]}
[20-10-21 05:53:14:193 PDT] 2{"values":[{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"red":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"red":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"red":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"red":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"red":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"blue":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"red":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"blue":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}}]}
[20-10-21 05:53:14:195 PDT] 3{"values":[{"effectiveFormat":{"backgroundColor":{"red":1,"blue":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"blue":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"red":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"red":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"blue":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"red":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"blue":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"red":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"blue":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}}]}
[20-10-21 05:53:14:198 PDT] 4{"values":[{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"red":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"blue":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"red":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"blue":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"red":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"red":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"red":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"red":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"blue":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"blue":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"blue":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"blue":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"red":1,"green":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"green":1,"red":1,"blue":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"red":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"red":1,"green":1}}},{"effectiveFormat":{"backgroundColor":{"blue":1,"green":1,"red":1}}}]}

Answer 1

回答：

并非row["values"]所有元素都有数据 - 因此当该行没有数据时，您无法运行.map(value => value["effectiveFormat"]["backgroundColor"]) 。

更多信息：

您已使用 API 从 API 获取数据

Sheets.Spreadsheets.get("1eAq-RbtrCSMRPZ0p7XIpG3vd29yL-3SQ3D3JGyiUhKg")

并使用您的字段掩码对其进行相应过滤。 您作为响应获得的数据将是工作表中的所有内容- 即使是没有背景颜色数据的单元格。 因此，您不能像这样映射每一行，因为您将尝试在它根本不存在的地方引用effectiveFormat元素。

使固定：

您可以使用三元运算符来解决这个问题； 如果元素value["effectiveFormat"]不存在，您可以简单地返回null ：

var rowData = TestArray["sheets"][0]["data"][0]["rowData"]
    .map(row => row.getValues()).toString()

var backgroundColors = JSON.parse("[" + rowData + "]")
    .map(value => {
        let v = value["effectiveFormat"]
        return v ? v["backgroundColor"] : null
    })

注意： API 还会在响应中返回 JSON 对象内的函数，您可以在 Apps 脚本中使用这些函数。 这很方便，因为直接引用row["values"]可以返回对象而不是数据：

console.log(TestArray["sheets"][0]["data"][0]["rowData"]
            .map(row => row["values"]))

产量：

[ 
  { 
    setPivotTable: [Function],
    getDataSourceTable: [Function],
    getDataValidation: [Function],
    getEffectiveValue: [Function],
    setNote: [Function],
    setFormattedValue: [Function],
    getTextFormatRuns: [Function],
    setUserEnteredFormat: [Function],
    toString: [Function],
    getFormattedValue: [Function],
    setEffectiveFormat: [Function],
    effectiveFormat: [Object],
    setDataSourceFormula: [Function],
    getPivotTable: [Function],
    setUserEnteredValue: [Function],
    setDataValidation: [Function],
    setDataSourceTable: [Function],
    getUserEnteredFormat: [Function],
    setEffectiveValue: [Function],
    getEffectiveFormat: [Function],
    getHyperlink: [Function],
    getNote: [Function],
    setHyperlink: [Function],
    getUserEnteredValue: [Function],
    setTextFormatRuns: [Function],
    getDataSourceFormula: [Function] 
  },
  ...
]

在将数据放回第二个映射函数之前，第一个.map(row => row.getValues())之后的toString()调用通过了这个。

我希望这对你有帮助！

参考：

• 条件（三元）运算符 - JavaScript | MDN