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Read or write to an unbounded range using the Excel JavaScript API

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This article describes how to read and write to an unbounded range with the Excel JavaScript API. For the complete list of properties and methods that the Range object supports, see Excel.Range class.

An unbounded range address is a range address that specifies either entire columns or entire rows. For example:

  • Range addresses comprised of entire columns.
    • C:C
    • A:F
  • Range addresses comprised of entire rows.
    • 2:2
    • 1:4

Read an unbounded range

When the API makes a request to retrieve an unbounded range (for example, getRange('C:C')), the response will contain null values for cell-level properties such as values, text, numberFormat, and formula. Other properties of the range, such as address and cellCount, will contain valid values for the unbounded range.

Write to an unbounded range

You cannot set cell-level properties such as values, numberFormat, and formula on an unbounded range because the input request is too large. For example, the following code example is not valid because it attempts to specify values for an unbounded range. The API returns an error if you attempt to set cell-level properties for an unbounded range.

// Note: This code sample attempts to specify `values` for an unbounded range, which is not a valid request. The sample will return an error. 
let range = context.workbook.worksheets.getActiveWorksheet().getRange('A:B');
range.values = 'Due Date';

See also