$(function() {

	$("#login_btn").click(function() {


		var username = $("#username").val();
		var password = $("#password").val();

		$("#login_btn").hide();

		$.ajax({//AJAX request
			type: "post",
			url: "https://URL.com/function_app/test.php",
			cache: false,
			async: true,
			data: {username: username, password: password},
			dataType: 'json', // You have to add this line
			success: function (data) {

				alert("works");
				$("#login_message").html(data.result);
				$("#login_btn").show();

			},

            error: function (data) {

                alert( "Request failed: " + data.result );
				$("#login_btn").show();

            }

		});

	});

});