ChatGPT Form Redirect for Drop Down Selection

I decided to ask ChatGPT to hook me up with some code to redirect based on my form’s drop down selections and it worked like a pro. Use at your own risk. I know nothing about code, so unfortunately I won’t have answers to questions:

document.addEventListener("DOMContentLoaded", function() {
  var form = document.getElementById("FORM ID NAME");
  form.addEventListener("submit", function(event) {
    var selectionidName = document.getElementById("SELECTION ID NAME").value;
    if (selectionidName === "OPTION ID NAME") {
      window.location.href = "URL";
    } else if (selectionidName === "OPTION ID NAME") {
      window.location.href = "URL";