Javascript 等待geocoder函数完成执行,然后继续

Javascript 等待geocoder函数完成执行,然后继续,javascript,jquery,google-maps-api-3,callback,steroids,Javascript,Jquery,Google Maps Api 3,Callback,Steroids,我正在使用Appgyver类固醇框架开发一个混合应用程序,我正在尝试实现一个“检测用户位置”功能,用户可以通过切换开关来选择是否希望自动检测他们的位置(long和lat),或者输入他们的位置(城市、邮政编码或县)输入到文本框中,单击按钮即可根据输入/选择计算经度和纬度 当用户将开关切换到“开”位置并点击提交时,navigator.geolocation.getCurrentPosition将被触发并调用相关函数,然后这些函数将其当前经度和纬度存储在localStorage中。这很好用 但是,当用

我正在使用Appgyver类固醇框架开发一个混合应用程序,我正在尝试实现一个“检测用户位置”功能,用户可以通过切换开关来选择是否希望自动检测他们的位置(long和lat),或者输入他们的位置(城市、邮政编码或县)输入到文本框中,单击按钮即可根据输入/选择计算经度和纬度

当用户将开关切换到“开”位置并点击提交时,
navigator.geolocation.getCurrentPosition
将被触发并调用相关函数,然后这些函数将其当前经度和纬度存储在
localStorage
中。这很好用

但是,当用户将开关切换到“关闭”位置时,my geocode函数[manuallyGeoCode()]将其位置编码为long和lat,但似乎没有及时触发,因此在调用该geocode函数后,在有时间实际设置
localStorage
值之前,警报会立即触发。我研究了使用回调,并研究了使用jQuery
deferred
方法,这两种方法我都没有成功使用。任何帮助都将不胜感激!谢谢你的阅读

这是我的密码:

    <h3>Your location</h3>
      <ul class="list">
        <li class="item item-toggle">Use my current location
          <label class="toggle toggle-balanced">
            <input type="checkbox" id="myLocationToggle" checked="true">
            <div class="track">
              <div class="handle"></div>
            </div>
          </label>
        </li>
        <li class="item item-input">
          <input type="text" id="userLocation" placeholder="City, town or postcode" disabled="true">
        </li>
      </ul>

<button class="button button-balanced" id="getLongLat">Get long/lat</button>


$(function(){
  AutoGeoCode(); 
});

function AutoGeoCode(){
  if (navigator.geolocation) {
    navigator.geolocation.getCurrentPosition(onSuccess, onError);
  }
}

$('#getLongLat').on('click',function(){
  localStorage.latToPost = '';
  localStorage.lngToPost = '';

  if(localStorage.userLatAutoDetected != '0' || localStorage.userLngAutoDetected != '0'){
    localStorage.latToPost = localStorage.userLatAutoDetected;
    localStorage.lngToPost = localStorage.userLngAutoDetected;
  }
  else{
    manuallyGeoCode(); // this doesn't finish in time so it jumps to the alert below and shows empty values.
  }

  alert('geodata is: {'+localStorage.latToPost+'}, {'+localStorage.lngToPost+'}');

});

$('#myLocationToggle').on('click',function(){
  if($(this).is(':checked')){
    $('#userLocation').val('').prop('disabled',true);
    AutoGeoCode();
  }
  else{
    $('#userLocation').val('').prop('disabled',false);
    localStorage.userLatAutoDetected = '0';
    localStorage.userLngAutoDetected = '0';
  }
});

function onSuccess(position){
    localStorage.userLatAutoDetected = position.coords.latitude;
    localStorage.userLngAutoDetected = position.coords.longitude;
}

function onError(error){
  alert('current location could not be auto detected. Error: ' + error);
}

//Autocomplete location search box
function initialize() {
  var address = (document.getElementById('userLocation'));
  var autocomplete = new google.maps.places.Autocomplete(address);
      autocomplete.setTypes(['geocode']);
  google.maps.event.addListener(autocomplete, 'place_changed', function() {
  var place = autocomplete.getPlace();
    if (!place.geometry) {
      return;
    }
  var address = '';
    if (place.address_components) {
      address = [
                  (place.address_components[0] && place.address_components[0].short_name || ''),
                  (place.address_components[1] && place.address_components[1].short_name || ''),
                  (place.address_components[2] && place.address_components[2].short_name || '')
                ].join(' ');
    }
  }); //end google.maps.event
}

function manuallyGeoCode(){
  var address = $('#userLocation').val();
  geocoder = new google.maps.Geocoder();
    geocoder.geocode({'address': address}, function(results, status) {
      if (status == google.maps.GeocoderStatus.OK) {
        localStorage.latToPost = results[0].geometry.location.lat();
        localStorage.lngToPost = results[0].geometry.location.lng();
      }
      else {
        alert('Your location could not be geocoded.');
      }
    });
}

google.maps.event.addDomListener(window, 'load', initialize);
您的位置
    使用我的当前位置
变长/变宽 $(函数(){ 自动地理编码(); }); 函数AutoGeoCode(){ if(导航器.地理位置){ navigator.geolocation.getCurrentPosition(onSuccess,onError); } } $('getLongLat')。在('click',function()上{ localStorage.latToPost=''; localStorage.lngToPost=''; if(localStorage.userLatAutoDetected!=“0”| | localStorage.userLngAutoDetected!=“0”){ localStorage.latToPost=localStorage.userLatAutoDetected; localStorage.lngToPost=localStorage.userLngAutoDetected; } 否则{ manuallyGeoCode();//此操作未及时完成,因此它会跳转到下面的警报并显示空值。 } 警报('地理数据为:{'+localStorage.latToPost+'},{'+localStorage.lngToPost+'}'); }); $('#myLocationToggle')。打开('单击',函数(){ 如果($(this).is(':checked')){ $('#userLocation').val('.prop('disabled',true); 自动地理编码(); } 否则{ $('#userLocation').val('.prop('disabled',false); localStorage.userLatAutoDetected='0'; localStorage.userLngAutoDetected='0'; } }); 成功时的功能(位置){ localStorage.userLatAutoDetected=position.coords.latitude; localStorage.userLngAutoDetected=position.coords.longitude; } 函数onError(错误){ 警报('无法自动检测到当前位置。错误:'+错误); } //自动完成位置搜索框 函数初始化(){ var address=(document.getElementById('userLocation'); var autocomplete=new google.maps.places.autocomplete(地址); setTypes(['geocode']); google.maps.event.addListener(自动完成,'place\u changed',函数(){ var place=autocomplete.getPlace(); 如果(!place.geometry){ 返回; } var地址=“”; if(位置、地址和组件){ 地址=[ (place.address_components[0]&&place.address_components[0]。简称| | |“”), (place.address_components[1]&&place.address_components[1]。简称| | |“”), (place.address_components[2]&&place.address_components[2]。简称| |“”) ].加入(“”); } });//结束google.maps.event } 功能手册地理代码(){ var address=$('#userLocation').val(); geocoder=新的google.maps.geocoder(); geocoder.geocode({'address':address},函数(结果,状态){ if(status==google.maps.GeocoderStatus.OK){ localStorage.latToPost=results[0]。geometry.location.lat(); localStorage.lngToPost=结果[0]。geometry.location.lng(); } 否则{ 警报('您的位置无法进行地理编码'); } }); } google.maps.event.addDomListener(窗口“加载”,初始化);
请找出手柄和手动地理编码功能的区别

$('#getLongLat').on('click',function(){
  localStorage.latToPost = '';
  localStorage.lngToPost = '';

  if(localStorage.userLatAutoDetected != '0' || localStorage.userLngAutoDetected != '0'){
    localStorage.latToPost = localStorage.userLatAutoDetected;
    localStorage.lngToPost = localStorage.userLngAutoDetected;
    alert('geodata is: {'+localStorage.latToPost+'}, {'+localStorage.lngToPost+'}');
  }else{
    manuallyGeoCode(function(){
      alert('geodata is: {'+localStorage.latToPost+'},{'+localStorage.lngToPost+'}');

    }); // this doesn't finish in time so it jumps to the alert below and shows empty values.
  }
});

function manuallyGeoCode(cb){
  var address = $('#userLocation').val();
  geocoder = new google.maps.Geocoder();
    geocoder.geocode({'address': address}, function(results, status) {
      if (status == google.maps.GeocoderStatus.OK) {
        localStorage.latToPost = results[0].geometry.location.lat();
        localStorage.lngToPost = results[0].geometry.location.lng();
        cb();
      }
      else {
        alert('Your location could not be geocoded.');
      }
    });
}

向manuallyGeoCode发送差异回调,并在geocoder中调用相同的回调。geocode的回调应help@Sunand-我刚刚尝试过,它仍然会触发警报并生成“geodata is:{},{}”。是因为我在if{}..else{}..中调用
manuallyGeoCode()
。。block?当我在if{}..else{}之外发出警报时,这会警告正确的地理数据。。它仍然显示警报,但没有地理数据。这有意义吗?原因是,我想通过ajax将本地存储数据发布到我的web服务中。因此,无论您在哪里使用alert,都会使用一个自定义函数将这些值作为参数并发送请求。感谢您的帮助。问题是,当我在
if else
块之后放置
$.ajax
请求时,
ajax
块将在
manuallyGeoCode
有机会回调地理数据并将这些值存储在
localStorage
之前执行。