谷歌地图 API 自动完成国家

Question

如果选择了地址，我只想在特定国家/地区获取地址。我的代码是：

var country="";
    $("select[name='country_id']").change(function () {
        co=$("select[name='country_id']").val();
    });
    function initialize() {
        var options={};
        if(country){
         options = {
                types: ['geocode'],
                componentRestrictions: {country: country}
            };
        }else{
            options = {
                types: ['geocode']
            };
        }
        var input = document.getElementById('address');
        var autocomplete = new google.maps.places.Autocomplete(input,options);
        google.maps.event.addListener(autocomplete, 'place_changed', function () {
        //...
        });
    }
    google.maps.event.addDomListener(window, 'load', initialize);

但我的国家/地区值始终为空。如何处理国家/地区以获取其值？请帮帮我。谢谢！

Answer 1

每次都必须

使用新的国家/地区onchange初始化自动完成

小提琴演示

.JS

var country = "";
$("select[name='country_id']").change(function() {
  country = $("select[name='country_id']").val();
  $('#searchTextField').attr('placeholder','search form '+$("select[name='country_id'] option:selected").text())
  $('#input').show();
  initialize()
});
function initialize() {
  var input = document.getElementById('searchTextField');
  var options = {
    componentRestrictions: {
      country: country
    }
  };
  var autocomplete = new google.maps.places.Autocomplete(input, options);
  google.maps.event.addListener(autocomplete, 'place_changed', function() {
    var place = autocomplete.getPlace();
    var lat = place.geometry.location.lat();
    var long = place.geometry.location.lng();
    alert(lat + ", " + long);
  });
}