Tag Archives: American Express

How to add a surcharge to the Amex option for the checkout form in the Online Store – Business Catalyst

By Mika | Published: 07/06/2010
Use onchange to alert the customer that a charge will occur and then the function doMath() calculates the surcharge. JavaScript   <script type="text/javascript">      function checkSel(obj) {       var ind = obj.selectedIndex;       if  (ind == 3) {           alert(‘This Card incurs a 3.5% Surcharge.’);   [...]
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