JS - Cookie management

$(document).ready(function() {
  var cookie_settings = getCookie("cookie-settings"); //Main cookie which contains cookie preferences
  var cookie_selector = document.getElementById("cookie-selector"); //Modal for cookie selection
  var g_recaptcha = document.getElementById("cookie-g-recaptcha"); //Example checkbox cookie
  var g_tag_manager = document.getElementById("cookie-g-tag-manager"); //Example checkbox cookie
  var messenger_plugin = document.getElementById("cookie-fb-mccp"); //Example checkbox cookie
  var g_analytics = document.getElementById("cookie-g-analytics"); //Example checkbox cookie
  var cookie_set = document.getElementById("cookie-set"); //Button to save preferences
  if (cookie_settings == null) { //Check if main cookie exist
    $(cookie_selector).modal({
      backdrop: 'static',
      keyboard: false
    }); //If not exist, open cookie selector modal
  } else {
    var cookie_settings_raw_values = getCookie("cookie-settings"); //read and save main cookie in var
    var cookie_settings_values = cookie_settings_raw_values.split('&'); //save main cookie content in array
    if (cookie_settings_values.includes(g_recaptcha.id)) {
      //If array contains recaptcha example include it
      //for example append in head -> $('head').append('myscript');
    }
    if (cookie_settings_values.includes(g_tag_manager.id)) {
      //same
      //for example append in head -> $('head').append('myscript');
    }
    if (cookie_settings_values.includes(messenger_plugin.id)) {
      //same
      //for example append in head -> $('head').append('myscript');
    }
    if (cookie_settings_values.includes(g_analytics.id)) {
      //same
      //for example append in head -> $('head').append('myscript');
    }
    //or you can remove else condition and manage this part from php
  }
  $(cookie_set).click(function() { //on save preferences click
    var selected_cookies = [g_recaptcha.id, g_tag_manager.id]; //make array and include required cookies
    if (messenger_plugin.checked == true) {
      //if messenger plugin example checkbox is checked push it's reference in array
      selected_cookies.push(messenger_plugin.id);
    }
    if (g_analytics.checked == true) {
      //same for the other optional checkboxes
      selected_cookies.push(g_analytics.id);
    }
    var expiry_date = new Date();
    expiry_date.setMonth(expiry_date.getMonth() + 6); //expiration date 6 months in my case, you can set what you want
    document.cookie = document.cookie = "cookie-settings=" + selected_cookies.join('&') + "; expires=" + expiry_date.toGMTString(); //make main cookie with required and optional selected checkboxes (the deadline is 6 months after the creation of the cookie)
    location.reload(); //reload page
  });
  //get cookie by name
  function getCookie(name) {
    var document_cookie = document.cookie;
    var prefix = name + "=";
    var begin = document_cookie.indexOf("; " + prefix);
    if (begin == -1) {
      begin = document_cookie.indexOf(prefix);
      if (begin != 0) {
        return null;
      }
    } else {
      begin += 2;
      var end = document.cookie.indexOf(";", begin);
      if (end == -1) {
        end = document_cookie.length;
      }
    }
    return decodeURI(document_cookie.substring(begin + prefix.length, end));
  }
});

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