Javascript 允许用户向谷歌地图添加标记并获取坐标
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Allowing users to add markers to google maps and getting the coordinates
提问by tapan
What i want to do is embed a map on my website and allow users to place markers on it (also if there is a way to control how many markers a user can put on the map?) and i also want to get the coordinates of these markers once they have been put on the map. From the documentation that i've read for google maps javascript api V3, i can place markers on the map myself, but i dont see a way to let users put them up on the map. Is there a way to do it?
我想要做的是在我的网站上嵌入地图并允许用户在其上放置标记（如果有办法控制用户可以在地图上放置多少标记？）这些标记一旦放在地图上。从我为 google maps javascript api V3 阅读的文档中，我可以自己在地图上放置标记，但我没有看到让用户将它们放在地图上的方法。有没有办法做到这一点？
回答by tapan
Source: http://code.google.com/apis/maps/documentation/javascript/events.htmlScroll down to accessingarguments in UI events.
来源：http: //code.google.com/apis/maps/documentation/javascript/events.html向下滚动以访问UI 事件中的参数。
var map;
function initialize() {
var myLatlng = new google.maps.LatLng(-25.363882,131.044922);
var myOptions = {
zoom: 4,
center: myLatlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
}
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
google.maps.event.addListener(map, 'click', function(event) {
placeMarker(event.latLng);
});
}
function placeMarker(location) {
var marker = new google.maps.Marker({
position: location,
map: map
});
map.setCenter(location);
}
