Jquery – How to disable mouse scroll wheel scaling with Google Maps API

google mapsgoogle-maps-api-3jqueryjquery-plugins

I am using Google Maps API (v3) to draw a few maps on a page. One thing I'd like to do is disable zooming when you scroll the mouse wheel over the map, but I'm unsure how.

I have disabled the scaleControl (i.e. removed the scaling UI element), but this doesn't prevent scroll wheel scaling.

Here is part of my function (it's a simple jQuery plugin):

$.fn.showMap = function(options, addr){
  options = $.extend({
    navigationControl: false,
    mapTypeControl: false,
    scaleControl: false,
    draggable: false,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  }, options);
  var map = new google.maps.Map(document.getElementById($(this).attr('id')), options);

  // Code cut from this example as not relevant
};

Best Answer

In version 3 of the Maps API you can simply set the scrollwheel option to false within the MapOptions properties:

options = $.extend({
    scrollwheel: false,
    navigationControl: false,
    mapTypeControl: false,
    scaleControl: false,
    draggable: false,
    mapTypeId: google.maps.MapTypeId.ROADMAP
}, options);

If you were using version 2 of the Maps API you would have had to use the disableScrollWheelZoom() API call as follows:

map.disableScrollWheelZoom();

The scrollwheel zooming is enabled by default in version 3 of the Maps API, but in version 2 it is disabled unless explicitly enabled with the enableScrollWheelZoom() API call.

Related Solutions

Javascript – Google Maps API v3: How to remove all markers

Simply do the following:

I. Declare a global variable:

var markersArray = [];

II. Define a function:

function clearOverlays() {
  for (var i = 0; i < markersArray.length; i++ ) {
    markersArray[i].setMap(null);
  }
  markersArray.length = 0;
}

google.maps.Map.prototype.clearOverlays = function() {
  for (var i = 0; i < markersArray.length; i++ ) {
    markersArray[i].setMap(null);
  }
  markersArray.length = 0;
}

III. Push markers in the 'markerArray' before calling the following:

markersArray.push(marker);
google.maps.event.addListener(marker,"click",function(){});

IV. Call the clearOverlays(); or map.clearOverlays(); function wherever required.

That's it!!

Javascript – Google Maps JS API v3 – Simple Multiple Marker Example

This is the simplest I could reduce it to:

<!DOCTYPE html>
<html> 
<head> 
  <meta http-equiv="content-type" content="text/html; charset=UTF-8" /> 
  <title>Google Maps Multiple Markers</title> 
  <script src="http://maps.google.com/maps/api/js?key=YOUR_API_KEY" 
          type="text/javascript"></script>
</head> 
<body>
  <div id="map" style="width: 500px; height: 400px;"></div>

  <script type="text/javascript">
    var locations = [
      ['Bondi Beach', -33.890542, 151.274856, 4],
      ['Coogee Beach', -33.923036, 151.259052, 5],
      ['Cronulla Beach', -34.028249, 151.157507, 3],
      ['Manly Beach', -33.80010128657071, 151.28747820854187, 2],
      ['Maroubra Beach', -33.950198, 151.259302, 1]
    ];
    
    var map = new google.maps.Map(document.getElementById('map'), {
      zoom: 10,
      center: new google.maps.LatLng(-33.92, 151.25),
      mapTypeId: google.maps.MapTypeId.ROADMAP
    });
    
    var infowindow = new google.maps.InfoWindow();

    var marker, i;
    
    for (i = 0; i < locations.length; i++) {  
      marker = new google.maps.Marker({
        position: new google.maps.LatLng(locations[i][1], locations[i][2]),
        map: map
      });
      
      google.maps.event.addListener(marker, 'click', (function(marker, i) {
        return function() {
          infowindow.setContent(locations[i][0]);
          infowindow.open(map, marker);
        }
      })(marker, i));
    }
  </script>
</body>
</html>

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SCREENSHOT

Google Maps Multiple Markers

There is some closure magic happening when passing the callback argument to the addListener method. This can be quite a tricky topic if you are not familiar with how closures work. I would suggest checking out the following Mozilla article for a brief introduction if it is the case:

❯ Mozilla Dev Center: Working with Closures

Best Answer

Related Solutions

Javascript – Google Maps API v3: How to remove all markers

Javascript – Google Maps JS API v3 – Simple Multiple Marker Example

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