How to send data with AJAX string?

Question

AJAX

how to pass strings to body using fetch?
i need to send userName string and password string by POST method and get
json format response and read its first parameter. How to do it?

Answer 1

https://developer.mozilla.org/en-US/docs/Web/API/F...

Answer 2

As you said yourself, JSON.
In jquery:

$.ajax({
      type: "POST",
      url: "ajax/get_data_analogue.php",
      data: {analogue:thisData}
    }).done(function(result) {
      let resultData = $.parseJSON(result);
    })

In PHP page for AJAX: In jquery:
<?=json_encode($arr)?>