copying not a scpecific number of rows - google-apps-script

Question

first I'm not good in coding just trying figure my way and make what i need.
so my function is to copy data from sheet to sheet and delete the data after finishing.
my issue is small but can't find a solution for it, it's when I'm copying it copy just 12 rows, but for me i want it to copy as much rows will be.
my final code i want it to copy the rows that have a specific word, but for now I'm searching for a solution for this issue.
var ss = SpreadsheetApp.getActiveSpreadsheet();
var copySheet = ss.getSheetByName("Sheet1");
var pasteSheet = ss.getSheetByName("Sheet2");
// get source range
var range = copySheet.getRange(2,1,12,4);
var source = range.getValues();
var destination = pasteSheet.getRange(pasteSheet.getLastRow()+1,1,12,4).setValues(source);
range.clearContent();
// get destination range
var destination = pasteSheet.getRange(pasteSheet.getLastRow()+1,1,12,1);
// clear source values
Browser.msgBox('Commande Confirmer');
}```
this is my code
thanks in advance

Answer 1

Description
In this example, the script gets all values from Sheet1, not just 12 rows. It then uses the Array.filter() to get all rows that have the word "Hello" in Column A. Not knowing how many rows match the filter I use source.length to tell getRange() how many rows to output.
Code.gs
function test() {
try {
var ss = SpreadsheetApp.getActiveSpreadsheet();
var copySheet = ss.getSheetByName("Sheet1");
var pasteSheet = ss.getSheetByName("Sheet2");
// get source range
var range = copySheet.getDataRange(); // Get all values
var source = range.getValues();
source = source.filter( row => row[0] === "Hello" );
var destination = pasteSheet.getRange(pasteSheet.getLastRow()+1,1,source.length,source[0].length).setValues(source);
// clear source values
range.clearContent();
Browser.msgBox('Commande Confirmer');
}
catch(err) {
console.log(err);
}
}
Reference
Sheet.getDataRange()
Array.filter()