将 ID 添加到谷歌地图标记

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Why not use an cache that stores each marker object and references an ID?

var markerCache= {};
var idGen= 0;


function codeAddress(addr, contentStr){
// create marker
// store
markerCache[idGen++]= marker;
}

Edit: of course this relies on a numeric index system that doesn't offer a length property like an array. You could of course prototype the Object object and create a length, etc for just such a thing. OTOH, generating a unique ID value (MD5, etc) of each address might be the way to go.

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I have a simple Location class that I use to handle all of my marker-related things. I'll paste my code below for you to take a gander at.

The last line(s) is what actually creates the marker objects. It loops through some JSON of my locations, which look something like this:

{"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"}

Here is the code:

If you look at the target() method in my Location class, you'll see that I keep references to the infowindow's and can simply open() and close() them because of a reference.

See a live demo: http://ww1.arbesko.com/en/locator/ (type in a Swedish city, like stockholm, and hit enter)

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();
};

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最佳答案

JavaScript is a dynamic language. You could just add it to the object itself.

var marker = new google.maps.Marker(markerOptions);
marker.metadata = {type: "point", id: 1};

Also, because all v3 objects extend MVCObject(). You can use:

marker.setValues({type: "point", id: 1});
// or
marker.set("type", "point");
marker.set("id", 1);
var val = marker.get("id");

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Marker already has unique id

marker.__gm_id

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Just adding another solution that works for me.. You can simply append it in the marker options:

var marker = new google.maps.Marker({
map: map,
position: position,


// Custom Attributes / Data / Key-Values
store_id: id,
store_address: address,
store_type: type
});

And then retrieve them with:

marker.get('store_id');
marker.get('store_address');
marker.get('store_type');