jQuery：hasClass() 方法检查被选元素是否包含指定的 class;after()在某元素之后插入新元素

Html代码1：

id="credit_provider_list" style="display: ">
 
  Credit Cards ( Visa or Mastercard, Powered by Authorize.net )
 

 
  Save 5% by using Bank Transfer ( Wire Transfer ) to complete your payment
 

 
  PayPal
 

Html代码2：

id="provider_list" style="display:">
  class="PAYMENT_PROVIDER_ONLINE ProviderHasPaymentForm" style="display:">
  class="ProviderNamecheckout_authorizenet" style="display:">Credit Cards ( Visa or Mastercard, Powered by Authorize.net )
 

  class="PAYMENT_PROVIDER_OFFLINE " style="display:">
  class="ProviderNamecheckout_moneyorder" style="display:">Save 5% by using Bank Transfer ( Wire Transfer ) to complete your payment
 

  class="PAYMENT_PROVIDER_ONLINE " style="display:">
  class="ProviderNamecheckout_paypalexpress" style="display:">PayPal
 

 
 

(Your bank might charge you about US$25 flat rate fee for Wire Transfer. )

 

<script type="text/javascript">        

        $('#provider_listinput[type=radio], #credit_provider_list input[type=radio]').click(function() { 

            

            //检查#provider_list的radio是否包含指定的样式名:  ProviderHasPaymentForm     

            if(!$(this).hasClass('ProviderHasPaymentForm')) { 
                ExpressCheckout.HidePaymentForm();
            }else {
                $('#CheckoutStepPaymentDetails').show();

            }

           if($('input:radio[name="checkout_provider"]:checked').val()=="checkout_moneyorder"){

               // 以 HTML 创建新元素
               var txt1="<div id='moneyorder1000'>(Your bank might charge you about US$25 flat rate fee for Wire Transfer. ) div>";   

               // 在Label样式名为：ProviderNamecheckout_moneyorder之后插入新元素
               $('.ProviderNamecheckout_moneyorder').after(txt1);          
           }
          

        });       
        
    script>