### **BSL.SetUPPay('tn','callbackMethod')** |参数|必填|说明| |-|-|-| |tn|是|定单流水号，在商户后台获取| |callbackMethod|是|回调接收自定义方法。三种结果：success：支付成功，fail：支付失败，cancel：取消支付| **例：** ```language <script type="text/javascript"> function payResult(r) { alert(r); } </script> <a href="#" onclick="BSL.SetUPPay('743198381620611867710', 'payResult')">银联支付</a> ```