Google scripts if statement with conditional formatting on last row only - if-statement

Question

I am trying to use a Google script to set a cell in the last row only of the 2nd column in a Google sheet to green color if it is:
1. <0, and
2. not equal to #N/A
Partial preferred approach
I have the following if statement (without using a loop):
var sheet = SpreadsheetApp.getActiveSpreadsheet().getSheetByName('Sheet1');
lastrow = sheet.getLastRow()
if (sheet.getRange(lastrow, 2, 1, 1) >0.00 && sheet.getRange(lastrow, 2, 1, 1) !='#N/A') {
sheet.getRange(lastrow, 2, 1, 1).setFontColor('green');
}
However, this is not working. It is simply not assigning the color green to the font.
Not the preferred approach
I could do this using a loop, based on this answer, and loop over all rows in the column one at a time:
var sheet = SpreadsheetApp.getActiveSpreadsheet().getSheetByName('Sheet1');
lastrow = sheet.getLastRow()
var oValues = sheet.getRange(2, 2, lastrow, 1).getValues();
for (var i = 0; i < oValues.length; i++) {
if (oValues[i] >0.00) {
sheet.getRange(i, 2, 1, 1).setFontColor('green');
}
}
However, the disadvantage is that this approach is formatting all the rows in the column. I only need to format the last row.
Is there a way to avoid looping over all rows and just check if the last row meets 1. and 2. from above?

Answer 1

How about this answer?
Modification points :
In your script, sheet.getRange(lastrow, 2, 1, 1) > 0.00 and sheet.getRange(lastrow, 2, 1, 1) !='#N/A' mean the comparison with the range. When you want to compare the value of a cell, you can use sheet.getRange(lastrow, 2, 1, 1).getValue().
The condition of <0 and not equal to #N/A can be written by if (value < 0 && value) {}.
The cell of last row of 2nd column can be written by sheet.getRange(sheet.getLastRow(), 2).
In your case, you can also use sheet.getRange(sheet.getLastRow(), 2, 1, 1).
The modified script which was reflected above is as follows.
Modified script :
var sheet = SpreadsheetApp.getActiveSpreadsheet().getSheetByName('Sheet1');
var range = sheet.getRange(sheet.getLastRow(), 2); // Last row of 2nd column
var value = range.getValue(); // Value of last row of 2nd column
if (value < 0 && value) { // <0 and not equal to #N/A
// range.setBackground("green"); // This line give the background color of cell.
range.setFontColor("green"); // This line give the font color of cell.
}
If I misunderstand your question, please tell me. I would like to modify.