请帮助我使用google geocoder.geocode.我知道这个函数运行异步,但我不知道如何处理它.
如何等待结果？这是我的代码:我的代码不等geocode.geocoder所以我得到undefined而不是geolocation.
<!DOCTYPE html>
<html>
<head>
<title>Geocoding service
</title>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<meta http-equiv="content-language" content="cs" />
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<link href="http://code.google.com//apis/maps/documentation/javascript/examples/default.css" rel="stylesheet">
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script>
<script>
function codeAddress(callback) {
var address = document.getElementById('address').value;
geocoder = new google.maps.Geocoder();
geocoder.geocode( { 'address': address}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
} else {
alert('Geocode was not successful for the following reason: ' + status);
}
},callback);
}
function geocoder(result) {
alert(codeAddress());
}
function button() {
geocoder(codeAddress) ;
} …