传参优化

@@ -206,8 +206,12 @@ function goDetail(item) {
 }
 }
 
 
 function handlePay(item) {
 function handlePay(item) {
+  let url = `/level/paymentDetail?examId=${item.examId}`
+  if (item.orderId) {
+    url += `&orderId=${item.orderId}`
+  }
   uni.navigateTo({
   uni.navigateTo({
-    url: `/level/paymentDetail?examId=${item.examId}&orderId=${item.orderId || ''}`
+    url: url
   })
   })
 }
 }
 </script>
 </script>