Simple conditional formatting in Google Sheets Script Editor - google-apps-script

Question

I am trying to create some basic conditional formatting rules with Scripts instead of the conditional formatting editor in sheets, because when a new row is added or removed, it breaks the rules already set. For example, when a row is deleted, the condition may be for the range A:C but then it adds "A1:C5,A6:C898". This causes some rows to be skipped by the rules so I am hoping a script will solve this.
So I want to simply change the cell background to green if the cell text is exactly "Y". I want to change it to red if text is exactly "N". I have other rules that I want to use but I am having trouble with the basics on this.
What I have so far in my script:
function onEdit(e) {
var ss = SpreadsheetApp.getActiveSpreadsheet();
var sheet = ss.getSheetByName("PRECLOSING");
var range = sheet.getRange("E:E,I:J,M:M,P:P,S:V,AB:AC,AF:AF");
range.activate();
var values = rangeY.getValues();
//for each row that data is present
for(var i = 0; i < values.length; i++) {
var cell = sheet.getRange(i + 1, 2);
if ( values == "X" )
{
cell.setBackground('black');
return;
} else {
cell.setBackground('white');
}
}
}

Answer 1

I made some modifications to your code.
The function getRange i don't think it can accept the ranges in that way, instead i think it can get just ranges that are continue (eg. A1:E10)
For that I created an array with the ranges you need and then I loop through them.
The function "getValues" returns a two dimensional array so you will need a second loop to get the actual value from the cell.
Then as you already have the range, you need to get the cell inside that range and not a new complete range.
function onEdit(e) {
var ss = SpreadsheetApp.getActiveSpreadsheet();
var sheet = ss.getSheetByName("PRECLOSING");;
var columns = ['E:E','I:J','M:M','P:P','S:V','AB:AC','AF:AF'];
for(var col in columns){ //loop to iterate the desired ranges
var range = sheet.getRange(columns[col]);
range.activate();
var values = range.getValues();
//for each row that data is present
for(var i = 0; i < values.length; i++) { //loop to iterate the rows
for( var j = 0; j< values[i].length ; j++){ //loop to iterate the columns
var cell = range.getCell(i+1, j+1);
if ( values[i][j] == "X" )
{
cell.setBackground('black');
}
}
}
}
}
Hope this helps.