update checkout/id API增加async/await

FrontEnd/pages/service/checkout/_id.vue

@@ -683,7 +683,7 @@ export default {
           console.log(err);
         });
     },
-    payNow() {
+    async payNow() {
       let isPass1 = this.$refs.ref_Booking.getValidation();//this.bookingDetail_Validation;
       let isPass2 = true;
       this.$refs.purchaserInfo.updatePurchaserInfo(true);//this.purchaserInfo_Validation;
@@ -741,7 +741,7 @@ export default {
         this.isLoading = true;
         let jsonData = null;
         let statusCode = 'failed'
-        this.$axios.post( `/trending/api/Onsite/Booking`, params)
+        await this.$axios.post( `/trending/api/Onsite/Booking`, params)
           .then((response) => {
             //console.log(response);
             this.isLoading = false;