Send a gtag.js event to GA via MonsterInsights when a form is submitted.

1162239-form-submit-send-event-to-ga.js

(function () {
  const searchForm = document.getElementById("search_form_map1881");
  const searchInput = document.getElementById("cspm_address_map1881");

  function sendEvent(event) {
    // DEBUG
    console.log(`Search city entered for searchForm is: ${searchInput.value}`);

    // GA code goes here. Below is an example using gtag.js API
    // via MonsterInsights.
    __gtagTracker("event", "conversion", {
      event_category: "search_form_map1881",
      event_action: searchInput.value,
      event_label: "cspm_address_map1881",
    });

    // Don't submit the form
    event.preventDefault();
  }

  searchInput.onchange = sendEvent;
})();