Looping through cells in a range in Google Sheets with Google Script

user_10213606 0
Viewed 19180

I want to write a script that allows me to highlight (background color) only some cells within a selected range, e.g., only cells in COLUMN 2 and ROW 2, even if I select the entire table.

Ex: How the script is supposed to work

For example:

For each cell in selected range {
 If selected cell[i][j] is within allowed range {
  cell background color = green
 };
};

The code I'm trying to finish:

function BackgroundColor() {
  var spreadsheet = SpreadsheetApp.getActive();
  var sheet = spreadsheet.getActiveSheet();
  var range = sheet.getActiveRange();
  var cells = range.getValues();
  var numRows = range.getNumRows();
  var numCols = range.getNumColumns();
  
  for (var i = 0; i < numRows; i++) {
    for (var j = 0; j < numCols; j++) {
      if (range.getValues()[i][j] == '') {
        range.setBackground('#00B050').setFontColor('#ffffff')
      }
    }
  }
  range.setValues(cells);
};

I was able to make it in VBA:

Sub cmdGreen()

    Dim Cel As Range
    Dim GreenArrayCount As Integer
    Dim InteriorColor As Long, FontColor As Long
    Dim GreenArray() As Variant
    Dim BodyRange As String

    InteriorColor = VBA.RGB(0, 176, 80) 'interior in green
    FontColor = VBA.RGB(255, 255, 255) 'font in white
    GreenArray = Array("COLUMN 2", "ROW 2")
    BodyRange = ActiveSheet.ListObjects(1).DataBodyRange.Address

    For Each Cel In Application.Selection.Cells
        If Not Intersect(Cel, Range(BodyRange)) Is Nothing Then
            For GreenArrayCount = LBound(GreenArray) To UBound(GreenArray)
                If (ActiveSheet.ListObjects(1).HeaderRowRange(Cel.Column).Value _
                    = GreenArray(GreenArrayCount) Or _
                    ActiveSheet.ListObjects(1).DataBodyRange(Cel.Row - 1, 1).Value _
                    = GreenArray(GreenArrayCount)) Then
                    Cel.Interior.Color = InteriorColor
                    Cel.Font.Color = FontColor
                End If
            Next GreenArrayCount
        End If
    Next Cel

End Sub

Can anyone help me, please?

google-apps-script google-sheets highlight range loops
2 Answers

Modified code:

function BackgroundColor() {

  var okColumn = [3, 6, 7, 8, 9];
  var spreadsheet = SpreadsheetApp.getActive();
  var sheet = spreadsheet.getActiveSheet();
  var selection = sheet.getSelection();
  var range = sheet.getActiveRange();
  var numRows = range.getNumRows();
  var numCols = range.getNumColumns();
  var startRow = range.getRow();
  var startCol = range.getColumn();

  for (var i = 3; i < numRows; i++) {
    for (var j = 0; j < numCols; j++) {
      for (var k = 0; k <= 4; k++) {
        if ((startRow + i == okRow) || (startCol + j == okColumn[k])) {
          range.getCell(i+1,j+1).setBackground('#00B050').setFontColor('#ffffff')
        }
      }
    }
  }
};
user_102136060

There are doubtless ways to improve performance, but this should do the trick.

function BackgroundColor() {
  var okRow = 2;
  var okColumn = 2;
  var spreadsheet = SpreadsheetApp.getActive();
  var sheet = spreadsheet.getActiveSheet();
  var selection = sheet.getSelection();

  //Logger.log('Active Range: ' + selection.getActiveRange().getA1Notation());

  var range = selection.getActiveRange();
  var numRows = range.getNumRows();
  var numCols = range.getNumColumns();
  var startRow = range.getRow();
  var startCol = range.getColumn();
  //Logger.log('row: ' + startRow);
  //Logger.log('col: ' + startCol);
  //Logger.log('num row: ' + numRows);
  //Logger.log('num col: ' + numCols);

  for (var i = 0; i < numRows; i++) {
    for (var j = 0; j < numCols; j++) {
      if ((startRow+i == okRow) || (startCol+j == okColumn)){
        //Logger.log('found: ' + i+' '+j);
        range.getCell(i+1,j+1).setBackground('#00B050').setFontColor('#ffffff')
      }
    }
  }
};

Note that the range is 0 based, but getCell is 1 based. Note too that my ok row and column here are based on actual rows and columns, not on their labels. In your example okRow would be 4 and okColumn would be 3.

user_66560500
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