我有以下代码根据一系列位置在Google地图上显示标记，但是我混合了邮政编码和纬度/经度，但我曾使用地址解析器将邮政编码转换为纬度/经度，但不能尝试设置标记时使用它们。
谢谢你的帮助！
var geocoder;
var map;
var pos;
var geoLat;
var geoLong;
var markers = [];
var bounds = new google.maps.LatLngBounds();
var locations = [
[null, 'London Eye, London', 51.503454,-0.119562, 4]
,[null, 'Palace of Westminster, London', 51.499633,-0.124755]
,[null, 'The London Dungeon', 'SE1 7PB', , 2] //Value with Postcode
];
function isNumber(o) { return ! isNaN (o-0) && o !== null && o !== "" && o !== false; }
function init() {
geocoder = new google.maps.Geocoder();
var num_markers = locations.length;
map = new google.maps.Map(document.getElementById('map_canvas'), {
zoom: 10,
center: new google.maps.LatLng(locations[0][2], locations[0][3]),
mapTypeId: google.maps.MapTypeId.ROADMAP
});
for (var i = 0; i < num_markers; i++) {
if (isNumber (locations[i][2]) && isNumber (locations[i][3])){
geoLat = locations[i][2]
geoLng = locations[i][3]
alert(typeof(geoLat) +' '+typeof(geoLng)) //generates a correct number number response
}else{
geocoder.geocode( { 'address': locations[i][2]}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
geoLat = results[0].geometry.location.lat()
geoLng = results[0].geometry.location.lng()
alert(typeof(geoLat) +' '+typeof(geoLng)) //generates a correct number number response
}
});
}
pos = new google.maps.LatLng(geoLat, geoLng); // Doesn't get value if a geocodes postcode added in
bounds.extend(pos);
map.fitBounds(bounds);
markers[i] = new google.maps.Marker({
position: pos,
map: map,
id: i,
title: locations[i][1]
});
}
}
google.maps.event.addDomListener(window, 'load', init);
Geolocation请求是一个异步调用，这意味着您的脚本正在运行，而API请求尚未完成。因此，您有两个选择。
直接在回调函数中定义标记
if (status == google.maps.GeocoderStatus.OK) { }
或写某事。类似于setMarker（）函数，并在回调中调用它。
function setMarker(lat, lng){}
通常，最好使Geocoding请求成为一个函数，例如：
doGeocode: function (address, postal_code, callback) {
console.log("TEST: " + address.toString());
var geocoder = new google.maps.Geocoder();
geocoder.geocode({
'address': address,
'componentRestrictions': {
'postalCode': postal_code,
'country': 'de'
}
}, function (results, status) {
if (status === google.maps.GeocoderStatus.OK) {
console.log(results);
callback(results);
} else {
//Error handling
alert('Geocode was not successful for the following reason: ' + status);
}
});
如果您现在要调用它，那就做
doGeocode (adress, postal_code, function (response){
//do your stuff
)};
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