toLocaleLowerCase() method

The toLocaleLowerCase() method in Apps Script is used to convert a string to lowercase based on the locale of the user’s browser. This can be useful when dealing with strings that have special characters or accents that may be different depending on the language or region.

For example, if you have a list of country names in a Google Sheet and you want to convert them to lowercase for consistency, you can use the toLocaleLowerCase() method to ensure that the special characters are handled correctly.

Here is an example code snippet:

function convertToLowerCase() {
  var sheet = SpreadsheetApp.getActiveSheet();
  var data = sheet.getDataRange().getValues();

  for (var i = 0; i < data.length; i++) {
    var country = data[i][0];
    var lowercaseCountry = country.toLocaleLowerCase();
    sheet.getRange(i+1, 1).setValue(lowercaseCountry);

In this example, the code loops through each row in the active sheet and converts the country name to lowercase using the toLocaleLowerCase() method. The result is then written back to the sheet in the first column.

Another example could be using the toLocaleLowerCase() method to handle user input in a form where the language or region may vary. This can help ensure that the input is consistent regardless of the user’s locale.