Google Maps Marker Show/hide

Question

I tried several codes and searched a lot for an answer, but I can\'t get this to work. I know very little of Javascript, so i\'m hopping someone can help me with this, cause

Answer 1

working fiddle

You need to look at the javascript console.

• fixed createMarker to use v3 syntax and used it.
• initialized arrays in markerGroups[type]
• there is no .isHidden method for a google.maps.Marker it is .getVisible.
• there are no .show() or .hide() methods for a google.maps.Marker, it is .setVisible.
• there are no marker shadows in v3 since the implementation of the "visual refresh"

(can't test your custom markers, you didn't provide them)

working code snippet:

var infoWindow = new google.maps.InfoWindow();
var customIcons = {
  monumento: {
    icon: 'http://maps.google.com/mapfiles/ms/icons/blue.png'
  },
  hotel: {
    icon: 'http://maps.google.com/mapfiles/ms/icons/green.png'
  },
  restaurantes: {
    icon: 'http://maps.google.com/mapfiles/ms/icons/yellow.png'
  },
  museus: {
    icon: 'http://maps.google.com/mapfiles/ms/icons/purple.png'
  }
};

var markerGroups = {
  "museus": [],
  "monumentos": [],
  "restaurantes": [],
  "hotel": []
};

function load() {
  var map = new google.maps.Map(document.getElementById("map"), {
    center: new google.maps.LatLng(38.639104, -8.210413),
    zoom: 12,
    mapTypeId: 'roadmap'
  });
  var infoWindow = new google.maps.InfoWindow();



  map.set('styles', [{
    zoomControl: false
  }, {
    featureType: "road.highway",
    elementType: "geometry.fill",
    stylers: [{
      color: "#ffd986"
    }]
  }, {
    featureType: "road.arterial",
    elementType: "geometry.fill",
    stylers: [{
      color: "#9e574f"
    }]
  }, {
    featureType: "road.local",
    elementType: "geometry.fill",
    stylers: [{
        color: "#d0cbc0"
      }, {
        weight: 1.1
      }

    ]
  }, {
    featureType: 'road',
    elementType: 'labels',
    stylers: [{
      saturation: -100
    }]
  }, {
    featureType: 'landscape',
    elementType: 'geometry',
    stylers: [{
      hue: '#ffff00'
    }, {
      gamma: 1.4
    }, {
      saturation: 82
    }, {
      lightness: 96
    }]
  }, {
    featureType: 'poi.school',
    elementType: 'geometry',
    stylers: [{
      hue: '#fff700'
    }, {
      lightness: -15
    }, {
      saturation: 99
    }]
  }]);

  //         downloadUrl("markers.xml", function (data) {
  var xml = xmlParse(xmlData);
  // var xml = data.responseXML;
  var markers = xml.documentElement.getElementsByTagName("marker");
  for (var i = 0; i < markers.length; i++) {
    var name = markers[i].getAttribute("name");
    var address = markers[i].getAttribute("address");
    var type = markers[i].getAttribute("type");

    var point = new google.maps.LatLng(
      parseFloat(markers[i].getAttribute("lat")),
      parseFloat(markers[i].getAttribute("lng")));
    var html = "" + name + " 
" + address;
    // var icon = customIcons[type] || {};
    var marker = createMarker(point, name, address, type, map);
    bindInfoWindow(marker, map, infoWindow, html);
  }
  // });
}

function createMarker(point, name, address, type, map) {
  var icon = customIcons[type] || {};
  var marker = new google.maps.Marker({
    map: map,
    position: point,
    icon: icon.icon,
    // shadow: icon.shadow,
    type: type
  });
  if (!markerGroups[type]) markerGroups[type] = [];
  markerGroups[type].push(marker);
  var html = "" + name + " 
" + address;
  bindInfoWindow(marker, map, infoWindow, html);
  return marker;
}

function toggleGroup(type) {
  for (var i = 0; i < markerGroups[type].length; i++) {
    var marker = markerGroups[type][i];
    if (!marker.getVisible()) {
      marker.setVisible(true);
    } else {
      marker.setVisible(false);
    }
  }
}

function bindInfoWindow(marker, map, infoWindow, html) {
  google.maps.event.addListener(marker, 'click', function() {
    infoWindow.setContent(html);
    infoWindow.open(map, marker);

  });
}

function downloadUrl(url, callback) {
  var request = window.ActiveXObject ? new ActiveXObject('Microsoft.XMLHTTP') : new XMLHttpRequest();

  request.onreadystatechange = function() {
    if (request.readyState == 4) {
      request.onreadystatechange = doNothing;
      callback(request, request.status);
    }
  };

  request.open('GET', url, true);
  request.send(null);
}

function doNothing() {}
google.maps.event.addDomListener(window, 'load', load);

var xmlData = '';

function xmlParse(str) {
  if (typeof ActiveXObject != 'undefined' && typeof GetObject != 'undefined') {
    var doc = new ActiveXObject('Microsoft.XMLDOM');
    doc.loadXML(str);
    return doc;
  }

  if (typeof DOMParser != 'undefined') {
    return (new DOMParser()).parseFromString(str, 'text/xml');
  }

  return createElement('div', null);
}

html,
body,
#map,
#map_wrap {
  height: 100%;
  width: 100%;
}

  

    

      Monuments (blue)
      Museums (purple)
      Restaurants (yellow)
      Hotels (green)