1
我對Google地圖有以下代碼。此代碼的目的是在中間顯示帶有標記的地圖。標記是可拖動的,當它被放下時,我需要它給出標記被放下的當前緯度/長度。該事件並不總是會發生。在Chrome中,如果我只是讓代碼運行,它不起作用。但是,如果我通過調試並停止附加事件的代碼來減慢它的速度,那麼讓它繼續下去,它就可以工作。似乎某處存在競爭條件,但我不知道在哪裏。有人可以看一看,看看你是否想出了一些東西。Google地圖標記事件
function initialize() {
var myOptions = {
zoom: 10,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var canvas = document.getElementById("MapCanvas");
var map = new google.maps.Map(canvas, myOptions);
// Try W3C Geolocation (Preferred)
if (navigator.geolocation) {
browserSupportFlag = true;
navigator.geolocation.getCurrentPosition(function (position) {
initialLocation = new google.maps.LatLng(position.coords.latitude, position.coords.longitude);
map.setCenter(initialLocation);
marker = new google.maps.Marker({
position: initialLocation,
draggable: true,
map: map,
title: "You are here"
});
}, function() {
handleNoGeolocation(browserSupportFlag);
});
// Try Google Gears Geolocation
} else if (google.gears) {
browserSupportFlag = true;
var geo = google.gears.factory.create('beta.geolocation');
geo.getCurrentPosition(function (position) {
initialLocation = new google.maps.LatLng(position.latitude, position.longitude);
map.setCenter(initialLocation);
marker = new google.maps.Marker({
position: initialLocation,
draggable: true,
map: map,
title: "You are here"
});
}, function() {
handleNoGeoLocation(browserSupportFlag);
});
// Browser doesn't support Geolocation
} else {
browserSupportFlag = false;
handleNoGeolocation(browserSupportFlag);
}
google.maps.event.addListener(marker, 'dragend', function() {
$("#txtLat").val(marker.position.Ia);
$("#txtLong").val(marker.position.Ja);
});
}