How to check ajax request is completed in jQuery

• Ajax post request with done, fail and always method

  <script> 
  $.ajax({
      url: "/ajax.php",
      method: "POST",
      data:{
          id: 1
      }
  })
  .done(function(resp) {
      console.log(resp);
  })
  .fail(function(xhr, status, error) {
      alert(xhr.statusText);
  })
  .always(function(jqXHR, textStatus) {
      if (textStatus != "success") {
          alert("Error: " + jqXHR.statusText); //error is always called .statusText
      } else {
          alert("Success: " + jqXHR.response); //might not always be named .response
      }
      alert('AJAX call complete');
  }); 
  </script>
  

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