class SpreadsheetApp method .insertColumns()

SpreadsheetApp is the Apps Script service.

.insertColumns() is the method name you will see after a dot in your code.

What it does

Inserts one or more blank columns at a given position.

Why it's used

  • Add a new metric column without breaking existing formulas.
  • Insert a helper column for IDs or calculations mid-table.

Common errors

  • Forgetting parentheses on insertColumns. Write SpreadsheetApp.insertColumns(), not SpreadsheetApp.insertColumns or insertColumns by itself.
  • Skipping dots between chained calls. Each step needs a dot, like SpreadsheetApp.getActiveSpreadsheet().getSheetByName('Data').insertColumns().
  • Adding spaces where they do not belong. Write SpreadsheetApp.insertColumns(), not SpreadsheetApp .insertColumns(), SpreadsheetApp.insertColumns (), or SpreadsheetApp . insertColumns().
  • Wrong capitalization. Use SpreadsheetApp and insertColumns, not spreadsheetapp or insertcolumns.

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