Why doesn't ga work in ajax?

Question

Google Analytics

I created a goal in GA

I write in ajax form submission:

$.ajax({
                url: "/frmVopros.php",
                data: {
                    name: $(".f").val(),
                    phone: $(".fп2").val(),
                    vopros: $(".fo3").val(),
                    cururl: document.location.href,
                    title: document.title
                },
                type: "GET",
                success: function(t) {
            console.log( "Request Succied" );
            ga('send', 'event', 'submit', 'btn');

and does not work, if you do this: for example
window.location.href = "?ok";, and instead of an event put a transition to the address, then it works .... maybe the Guru will tell you what's wrong?

Answer 1

To begin with, the code must be brought to the proper form. even if he falls.

$.ajax({
  url: "/frmVopros.php",
  data: {
    name: $(".f").val(),
    phone: $(".fп2").val(),
    vopros: $(".fo3").val(),
    cururl: document.location.href,
    title: document.title
  },
  type: "GET",
  success: function (t) {
    console.log("Request Succied");
    ga('send', 'event', 'submit', 'btn');
  }
});

Next, is ga a global function?