[openstreetmap/openstreetmap-website] history-sidebar width scroll (#1422)

[Holger Jeromin]

HolgerJeromin requested changes on this pull request.



> @@ -72,7 +72,27 @@ $(document).ready(function () {
       }
     });
   };
-
+  $(document).ready(function(){
+    $('#sidebar').on('mousedown', function(e){
+        var $dragable = $(this),
+            startWidth = $dragable.width(),
+            pX = e.pageX;
+        
+        $(document).on('mouseup', function(e){
+            $(document).off('mouseup').off('mousemove');

Deregister every mouseup and mousemove could generate problems. jQuery has namespaces in events for that. 
Saving the jQuery document object in a variable seems cleaner than multiple $(document) 

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