Add the following JS library to the client-side page for payment integration.

You must first install jQuery 1.0 or later version.

Client-side
<!-- jQuery --> <script type="text/javascript" src="https://code.jquery.com/jquery-1.12.4.min.js" ></script> <!-- iamport.payment.js --> <script type="text/javascript" src="https://cdn.iamport.kr/js/iamport.payment-{SDK-latest version}.js" ></script>

Add i'mport and jQuery libraries