我有一个循环并一次添加一个标记的脚本。
我正在尝试让当前标记有一个信息窗口，并且一次只能在地图上有5个标记（4个没有信息窗口，1个用于）
如何为每个标记添加一个ID，以便我可以根据需要删除和关闭信息窗口。
这是我用来设置标记的功能：
function codeAddress(address, contentString) {
var infowindow = new google.maps.InfoWindow({
content: contentString
});
if (geocoder) {
geocoder.geocode( { 'address': address}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
map.setCenter(results[0].geometry.location);
var marker = new google.maps.Marker({
map: map,
position: results[0].geometry.location
});
infowindow.open(map,marker);
} else {
alert("Geocode was not successful for the following reason: " + status);
}
});
}
}
答案 0 :(得分：179)
JavaScript是一种动态语言。你可以将它添加到对象本身。
var marker = new google.maps.Marker(markerOptions);
marker.metadata = {type: "point", id: 1};
此外，因为所有v3对象都扩展MVCObject()。您可以使用：
marker.setValues({type: "point", id: 1});
// or
marker.set("type", "point");
marker.set("id", 1);
var val = marker.get("id");
答案 1 :(得分：10)
只需添加另一个适合我的解决方案..您只需将其添加到标记选项中即可：
var marker = new google.maps.Marker({
map: map,
position: position,
// Custom Attributes / Data / Key-Values
store_id: id,
store_address: address,
store_type: type
});
然后使用以下命令检索它们：
marker.get('store_id');
marker.get('store_address');
marker.get('store_type');
答案 2 :(得分：3)
我有一个简单的Location类，用于处理所有与标记相关的事情。我会在下面粘贴我的代码，以便您明白。
最后一行是实际创建标记对象的内容。它遍历我的位置的一些JSON，看起来像这样：
{"locationID":"98","name":"Bergqvist Järn","note":null,"type":"retail","address":"Smidesvägen 3","zipcode":"69633","city":"Askersund","country":"Sverige","phone":"0583-120 35","fax":null,"email":null,"url":"www.bergqvist-jb.com","lat":"58.891079","lng":"14.917371","contact":null,"rating":"0","distance":"45.666885421019"}
以下是代码：
如果您查看我的位置类中的target()方法，您会看到我保留对infowindow的引用，并且因为引用而只能open()和close()。
观看现场演示：http://ww1.arbesko.com/en/locator/（在瑞典城市输入，如斯德哥尔摩，点击输入）
var Location = function() {
var self = this,
args = arguments;
self.init.apply(self, args);
};
Location.prototype = {
init: function(location, map) {
var self = this;
for (f in location) { self[f] = location[f]; }
self.map = map;
self.id = self.locationID;
var ratings = ['bronze', 'silver', 'gold'],
random = Math.floor(3*Math.random());
self.rating_class = 'blue';
// this is the marker point
self.point = new google.maps.LatLng(parseFloat(self.lat), parseFloat(self.lng));
locator.bounds.extend(self.point);
// Create the marker for placement on the map
self.marker = new google.maps.Marker({
position: self.point,
title: self.name,
icon: new google.maps.MarkerImage('/wp-content/themes/arbesko/img/locator/'+self.rating_class+'SmallMarker.png'),
shadow: new google.maps.MarkerImage(
'/wp-content/themes/arbesko/img/locator/smallMarkerShadow.png',
new google.maps.Size(52, 18),
new google.maps.Point(0, 0),
new google.maps.Point(19, 14)
)
});
google.maps.event.addListener(self.marker, 'click', function() {
self.target('map');
});
google.maps.event.addListener(self.marker, 'mouseover', function() {
self.sidebarItem().mouseover();
});
google.maps.event.addListener(self.marker, 'mouseout', function() {
self.sidebarItem().mouseout();
});
var infocontent = Array(
'<div class="locationInfo">',
'<span class="locName br">'+self.name+'</span>',
'<span class="locAddress br">',
self.address+'<br/>'+self.zipcode+' '+self.city+' '+self.country,
'</span>',
'<span class="locContact br">'
);
if (self.phone) {
infocontent.push('<span class="item br locPhone">'+self.phone+'</span>');
}
if (self.url) {
infocontent.push('<span class="item br locURL"><a href="http://'+self.url+'">'+self.url+'</a></span>');
}
if (self.email) {
infocontent.push('<span class="item br locEmail"><a href="mailto:'+self.email+'">Email</a></span>');
}
// Add in the lat/long
infocontent.push('</span>');
infocontent.push('<span class="item br locPosition"><strong>Lat:</strong> '+self.lat+'<br/><strong>Lng:</strong> '+self.lng+'</span>');
// Create the infowindow for placement on the map, when a marker is clicked
self.infowindow = new google.maps.InfoWindow({
content: infocontent.join(""),
position: self.point,
pixelOffset: new google.maps.Size(0, -15) // Offset the infowindow by 15px to the top
});
},
// Append the marker to the map
addToMap: function() {
var self = this;
self.marker.setMap(self.map);
},
// Creates a sidebar module for the item, connected to the marker, etc..
sidebarItem: function() {
var self = this;
if (self.sidebar) {
return self.sidebar;
}
var li = $('<li/>').attr({ 'class': 'location', 'id': 'location-'+self.id }),
name = $('<span/>').attr('class', 'locationName').html(self.name).appendTo(li),
address = $('<span/>').attr('class', 'locationAddress').html(self.address+' <br/> '+self.zipcode+' '+self.city+' '+self.country).appendTo(li);
li.addClass(self.rating_class);
li.bind('click', function(event) {
self.target();
});
self.sidebar = li;
return li;
},
// This will "target" the store. Center the map and zoom on it, as well as
target: function(type) {
var self = this;
if (locator.targeted) {
locator.targeted.infowindow.close();
}
locator.targeted = this;
if (type != 'map') {
self.map.panTo(self.point);
self.map.setZoom(14);
};
// Open the infowinfow
self.infowindow.open(self.map);
}
};
for (var i=0; i < locations.length; i++) {
var location = new Location(locations[i], self.map);
self.locations.push(location);
// Add the sidebar item
self.location_ul.append(location.sidebarItem());
// Add the map!
location.addToMap();
};
答案 3 :(得分：1)
为什么不使用存储每个标记对象的缓存并引用ID？
var markerCache= {};
var idGen= 0;
function codeAddress(addr, contentStr){
// create marker
// store
markerCache[idGen++]= marker;
}
编辑：当然这取决于数字索引系统，它不提供类似数组的长度属性。你当然可以原型化Object对象并为这样的东西创建一个长度等。 OTOH，生成每个地址的唯一ID值（MD5等）可能是要走的路。
答案 4 :(得分：-2)
标记已有唯一标识
marker.__gm_id