如何绑定JavaScript事件以处理woocommerce中的付款？

Question

我正在构建自定义支付网关插件，提交下单后将具有iframe信用卡表格，我必须在javascript中绑定事件并在woocommerce中处理付款

 public function process_payment( $order_id ) {
        echo ' <script>
    var success = function (response) {
    // redirect to url and process the payment if succes 
    }
    var failure = function (response) {
    // redirect to url and process the payment if failure 
    }
submitallinfo(firstname,lats,etc);

    </script>';
    }