google sheets change cell value code example

Example 1: read every cell in a column google app script

function appendString() {
  var range = SpreadsheetApp.getActiveSheet().getActiveRange();
  var values = range.getValues();

  var modified = values.map(function (row) {
    return row.map(function (col) { 
      return col + " string"; 
    }); 
  })

  range.setValues(modified);
}

Example 2: set cell value google script

function doTest() {
  SpreadsheetApp.getActiveSheet().getRange('F2').setValue('Hello');
}

Example 3: set cell value google script

var values = [
  ["2.000", "1,000,000", "$2.99"]
];

var range = sheet.getRange("B2:D2");
range.setValues(values);

Example 4: read every cell in a column google app script

function appendString() {
  const range = SpreadsheetApp.getActiveSheet().getActiveRange();
  const values = range.getValues();
  const modified = values.map(row => row.map(currentValue => currentValue + " string"));
  range.setValues(modified);
}