fix with method;

src/views/History.vue

@@ -14,7 +14,7 @@
                             <input id="date" type="date" class="form-control" v-model="customDateForPastDays">
                         </div>
                         <div>
-                            {{ moment(customDateForPastDays).format('dddd') }}
+                            {{ showWeekday(customDateForPastDays) }}
                         </div>
                         <ul class="list-group">
                             <li class="list-group-item"
@@ -122,6 +122,9 @@ export default {
 
             return time + postFix + plural;
         },
+        showWeekday(date) {
+            return moment(date).format('dddd');
+        }
     }
 }
 </script>