Result table: improve browser back button handling

src/client/components/facet_results/ResultTable.js

@@ -113,13 +113,15 @@ class ResultTable extends React.Component {
         this.props.updatePage(this.props.resultClass, 0);
       }
     }
+
     // handle browser's back button
-    const locationChanged = this.props.routeProps.location !== prevProps.routeProps.location;
-    if (locationChanged) {
+    window.onpopstate  = () => {
       const qs = this.props.routeProps.location.search.replace('?', '');
       const newPage = parseInt(querystring.parse(qs).page);
-      this.props.updatePage(this.props.resultClass, newPage);
-    }
+      if (newPage != this.props.data.page) {
+        this.props.updatePage(this.props.resultClass, newPage);
+      }
+    };
   }
 
   fetchResults = () => {