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我有一个代码，它应该输入一个日历事件，然后在单元格中插入一个注释，上面写着“已输入”。这部分有效，但仅在一定程度上有效。

如果我有多个事件（在不同的行上），它会在第一个事件上显示我想要的“输入”。但是对于其他人，它会创建一个向下 10 行而不是 1 行的注释。查看我的代码，我看不到任何会导致它这样做的东西 - 因为日历事件是完美创建的。我相信它位于该var Comment部分 - 但那里没有乘法！

谁能看到我哪里错了？！

  function CalendarInput() {

      var sheet = SpreadsheetApp.getActiveSheet();

       var startRow = 2;  // First row of data to process
      var numRows = 3;   // Number of rows to process
      var dataRange = sheet.getRange(startRow, 1, numRows, 26); //What data will be used
      var data = dataRange.getValues();
      var cal = CalendarApp.getDefaultCalendar(); //Gets the correct calendar
    for (i in data) {
      var row = data[i];
      var title = row[2];  // Column with Title
      var desc = row[8];       // Column with Description
      var date = row[3];   //Column with Date
      var edate = row[4] //Column with end date
      var loc = row[9];    //Column with Location
      var invite = row[11] //Column with Invite List
      var sent = row[12] //Check Sent
      var check = row[7]
      var Comment = sheet.getRange(i+startRow, 7).setNote("Inputted")


              cal.createAllDayEventSeries(title, new Date(date), CalendarApp.newRecurrence().addDailyRule().until(new Date(edate)), {description:desc,location:loc,guests:invite})
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1 回答 1

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There are documented warnings about the use of for..in to loop over Arrays, see this Description on MDN for example.

The problem you're seeing is being caused by the way for..in works in apps-script.

Demo Code

This test function will demonstrate what's going on when you .setComment() on row i + startRow:

function test() {
  var data = [ [2,3,4,5],[5,4,3,2],[6,7,8,9],[9,8,7,6] ];
  var startRow = 2;
  var i;

  Logger.log("for (var i in data)");
  for (i in data) {
    Logger.log( i + startRow );
  }
  Logger.log(typeof i);

  Logger.log("for (var i = 0; i < data.length ; i++)");
  for (i = 0; i < data.length ; i++) {
    Logger.log( i + startRow );
  }
  Logger.log(typeof i);
}

Logging Output

[13-06-01 22:41:10:046 EDT] for (var i in data)
[13-06-01 22:41:10:046 EDT] 02
[13-06-01 22:41:10:046 EDT] 12
[13-06-01 22:41:10:046 EDT] 22
[13-06-01 22:41:10:046 EDT] 32
[13-06-01 22:41:10:047 EDT] string

[13-06-01 22:41:10:047 EDT] for (var i = 0; i < data.length ; i++)
[13-06-01 22:41:10:047 EDT] 2.0
[13-06-01 22:41:10:047 EDT] 3.0
[13-06-01 22:41:10:047 EDT] 4.0
[13-06-01 22:41:10:047 EDT] 5.0
[13-06-01 22:41:10:047 EDT] number

What's happening?!

When the for..in loop is used, the looping variable i is a string - The looping variable i is of type String - and so you get string behavior for operators like +. When i + startRow is executed, startRow is coerced to a string, then is concatenated to i, which was already a string.

On the other hand, in the for loop, the same statement results in a mathematical operation, since both operands are of type number.

Don't use for..in for Array operations

It's short, it often works, but break the habit.

Use this instead:

for (var i = 0; i < data.length ; i++) {
  ...
于 2013-06-02T02:47:45.960 回答