[英]removing last added marker from google maps v3
I'm working on a site that uses google maps v3, thanks to which you can navigate to a specific location 我正在使用google maps v3的网站上工作,因此您可以导航到特定位置
web site - http://dev.fama.net.pl/walendia/lokalizacja.html 网站-http: //dev.fama.net.pl/walendia/lokalizacja.html
type 'szczecin' on input that is at the top of the site and click submit - a marker will appear on the map, then type 'warszawa' - new marker will appear on the map but old one is still there, how to remove previous marker from the map 在网站顶部的输入框中输入“ szczecin”,然后单击“提交”-一个标记将出现在地图上,然后键入“ warszawa”-新标记将出现在地图上但旧标记仍然存在,如何删除上一个地图上的标记
GOOGLE MAP CODE 谷歌地图代码
var map;
var directionDisplay;
var directionsService = new google.maps.DirectionsService();
var geocoder = new google.maps.Geocoder();
var stepDisplay;
var markersArray = [];
var iconSize = new google.maps.Size(158,59);
var iconOrigin = new google.maps.Point(0,0);
var iconAnchor = new google.maps.Point(20,59);
function initialize(center, zoom) {
directionsDisplay = new google.maps.DirectionsRenderer({suppressMarkers: true});
var mapOptions = {
zoom: zoom,
mapTypeId: google.maps.MapTypeId.ROADMAP,
panControl: false,
zoomControl: true,
zoomControlOptions: {
style: google.maps.ZoomControlStyle.LARGE,
position: google.maps.ControlPosition.TOP_RIGHT
}
}
map = new google.maps.Map(document.getElementById('map_canvas'), mapOptions);
directionsDisplay.setMap(map);
directionsDisplay.setPanel(document.getElementById('directions-panel'));
geocoder.geocode({address: center}, function(results, status) {
map.setCenter(results[0].geometry.location);
});
}
function addMarker(location, icon) {
geocoder.geocode({address: location}, function(results, status) {
marker = new google.maps.Marker({
position: results[0].geometry.location,
map: map,
icon: icon
});
google.maps.event.addListener(marker);
markersArray.push(marker);
});
}
function addMarker2(position, icon) {
var location = new google.maps.LatLng(52.08901624831595, 20.854395031929016);
var icon = {
url: 'http://dev.fama.net.pl/walendia/img/markers/end.png',
size: iconSize,
origin: iconOrigin,
anchor: iconAnchor
}
marker = new google.maps.Marker({
position: location,
map: map,
icon: icon
});
markersArray.push(marker);
}
function calcRoute(start, end) {
var start = start;
var end = end;
var request = {
origin: start,
destination: end,
travelMode: google.maps.TravelMode.DRIVING
};
directionsService.route(request, function(result, status) {
if (status == google.maps.DirectionsStatus.OK) {
var location = start;
var icon = {
url: 'http://dev.fama.net.pl/walendia/img/markers/start.png',
size: iconSize,
origin: iconOrigin,
anchor: iconAnchor
}
addMarker(location, icon);
addMarker2(location, icon);
directionsDisplay.setDirections(result);
}
});
}
// SET CENTER ON RESIZE
google.maps.event.addDomListener(window, "resize", function() {
var center = map.getCenter();
google.maps.event.trigger(map, "resize");
map.setCenter(center);
directionsDisplay.setMap(map);
});
$(document).ready(function() {
$('.form-box form').submit(function() {
var start = $(this).find('input[name="start"]').val();
var end = new google.maps.LatLng(52.08901624831595, 20.854395031929016);
directionsDisplay.setMap(map);
calcRoute(start, end);
return false;
});
});
HTML CODE HTML代码
$(document).ready(function() {
initialize('Łączności 131, 05-552 Łazy, Polska', 10);
addMarker2(location);
});
Before adding second marker you need to delete marker from markersArray
. 在添加第二个标记之前,您需要从markersArray
删除标记。 Use the following function to delete markers from array. 使用以下函数从数组中删除标记。
function deleteMarkers() {
if (markersArray) {
for (i=0; i < markersArray.length; i++) {
markersArray[i].setMap(null);
}
markersArray.length = 0;
}
}
NOTE: I just took some sample to remove and show markers when you click on buttons. 注意:当您单击按钮时,我只是拿了一些样本来删除并显示标记。 Use those functions according to your requirement. 根据您的要求使用这些功能。
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