Diagnostic reference

TypeError: e.range is not a function

Why calling e.range() fails in an onEdit trigger, and the fix: e.range is already a Range, not a function.

Updated September 12, 2026

Apps Script error

What it means

e.range is already a Range object, not a function that returns one. Apps Script event objects expose plain properties such as e.range, e.value, and e.oldValue. Calling e.range() treats the property as a method and fails as soon as the trigger fires.

Related error messages

TypeError: e.value is not a function
TypeError: e.parameter is not a function

Before and after

The code before and after the fix.

Problem 1 changed line

function onEdit(e) {
  const cell = e.range();
  Logger.log(cell.getA1Notation());
}

Fixed 1 changed line

function onEdit(e) {
  const cell = e.range;
  Logger.log(cell.getA1Notation());
}

How to fix it

Read e.range directly. The edit event supplies a Range object.
Remove the call parentheses from e.range(). myFunction flags the call in the editor and offers a quick fix that removes them.
Test by editing a cell in the bound spreadsheet.

Things to check

e exists only when the trigger fires. To run onEdit by hand, pass it a test event object.
myFunction does not install or fire triggers.