小编use*_*873的帖子

当我尝试更改位置时,我遇到了问题.我已连接到地图

var mapOptions = {
   zoom: 7,
   center: new google.maps.LatLng(48.379433, 31.165579999999977),
   mapTypeControl: false,
   mapTypeId: google.maps.MapTypeId.ROADMAP
}
map = new google.maps.Map(document.getElementById("map_canvas"), mapOptions);

现在我需要在地图上更改位置

<select onChange="changeCity()" id="city"><option value="50.4501, 30.523400000000038">????</option><option value="49.839683, 24.029717000000005">?????</option></select>

为此,我正在使用:

function changeCity() {
   var city = document.getElementById('city').value;
   var city_1 = new google.maps.LatLng(city);
   map.setCenter(city_1);
}

但没有任何反应(我看到灰色区域).请帮忙...!