javascript - How can I send an Ajax Request on button click from a form with 2 buttons?

Question

I want to send a request from one page to another from a form which has 2 buttons:

<form method="post">
    <button id="button_1" value="val_1" name="but1">button 1</button>
    <button id="button_2" value="val_2" name="but2">button 2</button>
    <input id="access_token" type="hidden" name="access_token" value="<?php echo $_SESSION['access_token']; ?>" />
</form>

$(document).ready(function() {
  $("#button_1").click(function(e) {
    e.preventDefault();
    $.ajax({
      type: "POST",
      url: "/pages/test/",
      data: {
        id: $("#button_1").val(),
        access_token: $("#access_token").val()
      },
      success: function(result) {
        alert('ok');
      },
      error: function(result) {
        alert('error');
      }
    });
  });

  $("#button_2").click(function(e) {
    e.preventDefault();
    $.ajax({
      type: "POST",
      url: "/pages/test/",
      data: {
        id: $("#button_2").val(),
        access_token: $("#access_token").val()
      },
      success: function(result) {
        alert('ok');
      },
      error: function(result) {
        alert('error');
      }
    });
  });
});

How can I improve this code and maybe merge it into one function?

Answer 1

Given that the only logical difference between the handlers is the value of the button clicked, you can use the this keyword to refer to the element which raised the event and get the val() from that. Try this:

$("button").click(function(e) {
    e.preventDefault();
    $.ajax({
        type: "POST",
        url: "/pages/test/",
        data: { 
            id: $(this).val(), // < note use of 'this' here
            access_token: $("#access_token").val() 
        },
        success: function(result) {
            alert('ok');
        },
        error: function(result) {
            alert('error');
        }
    });
});