How to use AJAX action in my controller method? - magento2

Question

I'm integrating the payment module, I want to call ajax to the controller for third party API.
Does anyone know how to do it? Thanks in advance.
I've got a getAjax.php controller at
vendorName\moduleName\Controller\Index
I want to use getPrice() method with ajax.
Here is GetAjax.php
<?php
namespace vendorName\moduleName\Controller\Index;
use Magento\Framework\App\Action\Context;
class GetAjax extends \Magento\Framework\App\Action\Action {
public function __construct(
Context $context,
\Magento\Framework\Controller\Result\JsonFactory $resultJsonFactory
) {
$this->resultJsonFactory = $resultJsonFactory;
parent::__construct($context);
}
public function getPrice(){
print "heuss" ;
}
public function execute() {
/** #var \Magento\Framework\Controller\Result\Json $result */
$result = $this->resultJsonFactory->create();
return $result->setData(['success' => true]);
}
}
And this is the AJAX.js file
define(['jquery'],
function ($) {
$(document).ready(function() {
$.ajax({
url : 'Iostpaymagento/index/getAjax',
type : 'GET',
data: {
format: 'JSON.stringify'
},
dataType:'json',
success : function(data) {
alert('Data: '+data);
},
error : function(request,error)
{
alert("Error");
}
});
});
});
I am getting error like
require.js:166 Uncaught Error: Mismatched anonymous define() module: function ($) {

Answer 1

Magento 2 does not allow you to do that.
If you want to use that getPrice method I recommend you to create an API for that