Google Script: Moving row to different sheets based on multiple conditions - google-apps-script

Question

I've created a spreadsheet that I'd like to separate based on the data found in one particular cell. The main spreadsheet has a column that indicates either "tardy, discipline, reinforcement." I'd like to move "tardy" and "reinforcement" into their own spreadsheets. Additionally, I'd like "tardy" and "reinforcement" lines to be removed, once in the appropriate sheet. This should give me a total of three spreadsheets.
I've used a script before that was working and moving my tardy lines onto a different spreadsheet. However, for whatever reason, I am not getting an error that says "TypeError: Cannot read property 'length' of undefined (line 19, file "Code").
I've been playing around with this and it's likely I've messed something up. I have no experience coding but I'm trying my best to figure this out. Currently, the script I have is below. Any help would be greatly appreciated.
function copyrange() {
var ss = SpreadsheetApp.getActiveSpreadsheet();
var sheet = ss.getSheetByName('Minor Infractions - Current'); //source sheet
var testrange = sheet.getRange('O:O'); //range to check
var testvalue = (testrange.getValues());
var csh = ss.getSheetByName('Tardies - Current'); //destination sheet
var data = [];
var j =[];
//Condition check in O:O; If true copy the same row to data array
for (i=0; i<testvalue.length;i++) {
if ( testvalue[i] == 'Tardy') {
data.push.apply(data,sheet.getRange(i+1,1,1,25).getValues());
//Copy matched ROW numbers to j
j.push(i);
}
}
//Copy data array to destination sheet
csh.getRange(csh.getLastRow()+1,1,data.length,data[0].length).setValues(data);
//Delete matched rows in the source sheet
for (i=0;i<j.length;i++){
var k = j[i]+1;
sheet.deleteRow(k);
//Alter j to account for deleted rows
if (!(i == j.length-1)) {
j[i+1] = j[i+1]-i-1;
}
}
}

Answer 1

as this answer says, you could accomplish this with a function:
=sort(importrange("spreadsheetURL", "Sheet1!A2:AA10000"),sort_col#,TRUE/FALSE,[sort_col2#],[TRUE/FALSE]...)
keep in mind this function is a guide, you can't just copy and paste, you have to fill out the values

Answer 2

Try this:
function copyrange() {
const ss=SpreadsheetApp.getActive();
const sheet=ss.getSheetByName('Minor Infractions - Current');
const testrange=sheet.getRange(1,15,sheet.getLastRow());
const testvalue=testrange.getValues();
const csh=ss.getSheetByName('Tardies - Current');
let data=[];
let d=0;
for (let i=0;i<testvalue.length;i++) {
if (testvalue[i]=='Tardy') {
data.push(sheet.getRange(i+1,1,1,25).getValue());
sheet.deleteRow(i+1-d++);
}
}
csh.getRange(csh.getLastRow()+1,1,data.length,data[0].length).setValues(data);
}