从Google地图自动填充中检索信息 [英] Retrieve info from google maps autocomplete

问题描述

我使用这段代码来生成带有自动完成功能的Google地图，并使用lat，lng，adress和town等信息进行自动填充。问题是我无法为城镇检索正确的值。

这是我的代码

 <！DOCTYPE html> 
< html> 
< head> 
< meta name =viewportcontent =initial-scale = 1.0，user-scalable = no> 
< meta charset =utf-8> 
< style> 
 html，body {
 height：100％; 
保证金：0; 
 padding：0; 
} 
 #map {
 height：100％; 
} 
 .controls {
 margin-top：10px; 
 border：1px透明; 
 border-radius：2px 0 0 2px; 
 box-sizing：border-box; 
 -moz-box-sizing：border-box; 
 height：32px; 
概述：无; 
 box-shadow：0 2px 6px rgba（0，0，0，0.3）; 
} 
 
＃pac-input {
 background-color：#fff; 
 font-family：Roboto; 
 font-size：15px; 
 font-weight：300; 
 margin-left：12px; 
 padding：0 11px 0 13px; 
文本溢出：省略号; 
 width：300px; 
} 
 
＃pac-input：focus {
 border-color：＃4d90fe; 
} 
 
 .pac-container {
 font-family：Roboto; 
} 
 
＃type-selector {
 color：#fff; 
背景颜色：＃4d90fe; 
 padding：5px 11px 0px 11px; 
} 
 
＃类型选择器标签{
 font-family：Roboto; 
 font-size：13px; 
 font-weight：300; 
} 
 
< / style> 
< / head> 
< body> 
< input id =pac-inputclass =controlstype =text
 placeholder =Enter a location> 
 
< div id =mapstyle =width：500px; height：500px;>< / div> 
 
< script> 
函数initMap（）{
 var map = new google.maps.Map（document.getElementById（'map'），{
 center：{lat：-33.8688，lng：151.2195}， 
 zoom：13 
}）; 
 var options = {
 componentRestrictions：{country：it} 
}; 
 
 var input = / ** @type {！HTMLInputElement} * /（
 document.getElementById（'pac-input'））; 
 
 var autocomplete = new google.maps.places.Autocomplete（input，options）; 
 autocomplete.bindTo（'bounds'，map）; 
 
 var infowindow = new google.maps.InfoWindow（）; 
 var marker = new google.maps.Marker（{
 map：map，
 anchorPoint：new google.maps.Point（0，-29），
}）; 
 
 autocomplete.addListener（'place_changed'，function（）{
 infowindow.close（）; 
 marker.setVisible（false）; 
 var place = autocomplete。 getPlace（）; 
 
 if（！place.geometry）{
 window.alert（Autocomplete返回的地方不包含几何图形）; 
 return; 
} 
 
 //如果地点有一个几何图形，那么将其显示在地图上
 if（place.geometry.viewport）{
 map.fitBounds（place.geometry.viewport） ; 
} else {
 map.setCenter（place.geometry.location）; 
 map.setZoom（17）; //为什么是17？因为它看起来不错。
} 
 marker.setIcon（/ ** @type {google.maps.Icon} * /（{
 url：place.icon，
 size：new google.maps.Size（71，71） ，
 origin：new google.maps.Point（0，0），
 anchor：new google.maps.Point（17，34），
 scaledSize：new google.maps.Size 35，35）
）））; 
 marker.setPosition（place.geometry.location）; 
 marker.setVisible（true）; 
 
 var address =' '; 
 if（place.address_components）{
地址= [
（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（''）; 
} 
 
 infowindow.setContent（'< div>< strong>'+ place.name +'< / strong>< br>'+ address）; 
 infowindow.open（map，marker）; 
 
 
 
 var adress_form = address; 
 document.getElementById（'adress'）。value = adress_form 
 
 var lat_form = place.geometry.location.lat（）; 
 document.getElementById（'lat'）。value = lat_form 
 
 var lng_form = place.geometry.location.lng（）; 
 document.getElementById（'lng'）。value = lng_form 
 
函数extractFromAdress（components，type）{
 for（var i = 0; i< components.length; i ++ ）
 for（var j = 0; j< components [i] .types.length; j ++）
 if（components [i] .types [j] ==类型）返回组件[i]。 LONG_NAME; 
 return; 
} 
 
 var town = extractFromAdress（results [0] .address_components，locality）; 
 document.getElementById（'city'）。value = town 
}）; 
} 
< / script> 
< form method =postaction =a.php> 
< input placeholder =adresstype =textid =adressname =adress> 
< input placeholder =citytype =textid =cityname =city> 
< input placeholder =lattype =textid =latname =lat> 
< input placeholder =lngtype =textid =lngname =lng> 
< input placeholder =latlngtype =textid =latlngname =latlng> 
< input placeholder =nametype =textid =namename =name> 
< input type =submitvalue =inserisci> 
< script src =https://maps.googleapis.com/maps/api/js?key=MYKEY&signed_in=true&libraries=places&callback=initMap
 async defer><<<< ; /脚本> 
< / form> 
< / body> 
< / html> 
  

解决方案

c $ c>未捕获的ReferenceError：结果未定义在这一行上：

  var town = extractFromAdress （结果[0] .address_components，locality）; 
  

这应该是您检索的地方对象（您从中获得了其他信息）：

  var place = autocomplete.getPlace（）; 
  

然后它就起作用了（如果结果有locality类型的结果）

  var town = extractFromAdress（place.address_components，locality）; 
 document.getElementById（'city'）。value = town; 
  

概念证明小提琴

程式码片段：

 函数initMap（）{var map = new google.maps.Map（document.getElementById（'map'），{center：{lat：-33.8688，lng：151.2195}，zoom：13 }）; var options = {componentRestrictions：{country：it}}; var input = / ** @type {！HTMLInputElement} * /（document.getElementById（'pac-input'））; var autocomplete = new google.maps.places.Autocomplete（input，options）; autocomplete.bindTo（'bounds'，map）; var infowindow = new google.maps.InfoWindow（）; var marker = new google.maps.Marker（{map：map，anchorPoint：new google.maps.Point（0，-29），}）; autocomplete.addListener（'place_changed'，function（）{infowindow.close（）; marker.setVisible（false）; var place = autocomplete.getPlace（）; if（！place.geometry）{window.alert（Autocomplete's returned place包含没有几何）;返回;} / /如果地方有一个几何，然后将其呈现在地图上if（place.geometry.viewport）{map.fitBounds（place.geometry.viewport）;} else {map。 setCenter（place.geometry.location）; map.setZoom（17）; //为什么是17？因为它看起来不错。} marker.setIcon（/ ** @type {google.maps.Icon} * /（{url：place .icon，size：new google.maps.Size（71，71），origin：new google.maps.Point（0，0），anchor：new google.maps.Point（17，34），scaledSize：new google。 map.Size（35,35）}））; marker.setPosition（place.geometry.location）; marker.setVisible（true）; var address =''; if（place.address_components）{address = [（place.address_components [0]&& place.address_c omponents [0] .short_name || '），（place.address_components [1]& place.address_components [1] .short_name ||''），（place.address_components [2]& place.address_components [2] .short_name || ''）] .join（''）; } infowindow.setContent（'< div>< strong>'+ place.name +'< / strong>< br>'+ address）; infowindow.open（map，marker）; var adress_form = address; document.getElementById（'adress'）。value = adress_form var lat_form = place.geometry.location.lat（）; document.getElementById（'lat'）。value = lat_form var lng_form = place.geometry.location.lng（）;对于（var j = 0; j< components [i]），document.getElementById（'lng'）.value = lng_form function extractFromAdress（components，type）{for（var i = 0; i< components.length; i ++） .types.length; j ++）if（components [i] .types [j] == type）return components [i] .long_name;返回; } var town = extractFromAdress（place.address_components，locality）; document.getElementById（'city'）。value = town; }）;} google.maps.event.addDomListener（window，'load'，initMap）;  

  html，body {height：100％;保证金：0; padding：0;}＃map {height：100％;}。controls {margin-top：10px;边框：1px实心透明; border-radius：2px 0 0 2px;盒子尺寸：边框; -moz-box-sizing：border-box; height：32px;概要：无; box-shadow：0 2px 6px rgba（0，0，0，0.3）;}＃pac-input {background-color：#fff;字体家族：Roboto; font-size：15px; font-weight：300; margin-left：12px;填充：0 11px 0 13px;文本溢出：省略号;宽度：300px;}＃pac-input：focus {border-color：＃4d90fe;}。pac-container {font-family：Roboto;}＃type-selector {color：#fff; background-color：＃4d90fe; padding：5px 11px 0px 11px;}＃type-selector label {font-family：Roboto; font-size：13px; font-weight：300;}  

< script src = https://maps.googleapis.com/maps/api/js?libraries=places\"></script><input id =pac-inputclass =controlstype =textplaceholder = Enter a location>< div id =mapstyle =width：500px; height：500px;>< / div>< form method =postaction =a.php> ; < input placeholder =adresstype =textid =adressname =adress> < input placeholder =citytype =textid =cityname =city> < input placeholder =lattype =textid =latname =lat> < input placeholder =lngtype =textid =lngname =lng> < input placeholder =latlngtype =textid =latlngname =latlng> < input placeholder =nametype =textid =namename =name> < input type =submitvalue =inserisci>< / form>

I've this code that I use to generate a google map with autocomplete e some field that will autofill with info like lat, lng, adress and town. The problem is that I cant archieve to retrieve the correct value for town.

Here is my code

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<style>
  html, body {
    height: 100%;
    margin: 0;
    padding: 0;
  }
  #map {
    height: 100%;
  }
.controls {
margin-top: 10px;
border: 1px solid transparent;
border-radius: 2px 0 0 2px;
box-sizing: border-box;
-moz-box-sizing: border-box;
height: 32px;
outline: none;
box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

#pac-input {
background-color: #fff;
font-family: Roboto;
font-size: 15px;
font-weight: 300;
margin-left: 12px;
padding: 0 11px 0 13px;
text-overflow: ellipsis;
width: 300px;
}

#pac-input:focus {
border-color: #4d90fe;
}

.pac-container {
font-family: Roboto;
 }

#type-selector {
color: #fff;
background-color: #4d90fe;
padding: 5px 11px 0px 11px;
}

#type-selector label {
font-family: Roboto;
font-size: 13px;
font-weight: 300;
}

</style>
</head>
<body>
<input id="pac-input" class="controls" type="text"
    placeholder="Enter a location">

<div id="map" style="width:500px; height:500px;"></div>

<script>
function initMap() {
var map = new google.maps.Map(document.getElementById('map'), {
center: {lat: -33.8688, lng: 151.2195},
zoom: 13
});
var options = {
componentRestrictions: {country: "it"}
};

var input = /** @type {!HTMLInputElement} */(
  document.getElementById('pac-input'));

var autocomplete = new google.maps.places.Autocomplete(input, options);
autocomplete.bindTo('bounds', map);

var infowindow = new google.maps.InfoWindow();
var marker = new google.maps.Marker({
map: map,
anchorPoint: new google.maps.Point(0, -29),
});

autocomplete.addListener('place_changed', function() {
infowindow.close();
marker.setVisible(false);
var place = autocomplete.getPlace();

if (!place.geometry) {
  window.alert("Autocomplete's returned place contains no geometry");
  return;
}

// If the place has a geometry, then present it on a map.
if (place.geometry.viewport) {
  map.fitBounds(place.geometry.viewport);
} else {
  map.setCenter(place.geometry.location);
  map.setZoom(17);  // Why 17? Because it looks good.
}
marker.setIcon(/** @type {google.maps.Icon} */({
  url: place.icon,
  size: new google.maps.Size(71, 71),
  origin: new google.maps.Point(0, 0),
  anchor: new google.maps.Point(17, 34),
  scaledSize: new google.maps.Size(35, 35)
}));
marker.setPosition(place.geometry.location);
marker.setVisible(true);

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(' ');
}

infowindow.setContent('<div><strong>' + place.name + '</strong><br>' + address);
infowindow.open(map, marker);



var adress_form = address;
document.getElementById('adress').value = adress_form

var lat_form= place.geometry.location.lat();
document.getElementById('lat').value = lat_form

var lng_form= place.geometry.location.lng();
document.getElementById('lng').value = lng_form

function extractFromAdress(components, type){
for (var i=0; i<components.length; i++)
    for (var j=0; j<components[i].types.length; j++)
        if (components[i].types[j]==type) return components[i].long_name;
return "";
}

var town = extractFromAdress(results[0].address_components, "locality");
    document.getElementById('city').value = town
});
}
</script>
<form method="post" action="a.php">
<input placeholder="adress" type="text" id="adress" name="adress">
<input placeholder="city" type="text" id="city" name="city">
<input placeholder="lat" type="text" id="lat" name="lat">
<input placeholder="lng" type="text" id="lng" name="lng">
<input placeholder="latlng" type="text" id="latlng" name="latlng">
<input placeholder="name" type="text" id="name" name="name">
<input type="submit" value="inserisci">
<script src="https://maps.googleapis.com/maps/api/js?key=MYKEY&signed_in=true&libraries=places&callback=initMap"
    async defer></script>
    </form>
</body>
</html>

解决方案

I get a javascript error with your code: Uncaught ReferenceError: results is not defined on this line:

var town = extractFromAdress(results[0].address_components, "locality");

That should be the place object you retrieved (that you got the rest of the information from):

var place = autocomplete.getPlace();

Then it works (if the result has a result of type "locality")

var town = extractFromAdress(place.address_components, "locality");
document.getElementById('city').value = town;

proof of concept fiddle

code snippet:

function initMap() {
  var map = new google.maps.Map(document.getElementById('map'), {
    center: {
      lat: -33.8688,
      lng: 151.2195
    },
    zoom: 13
  });
  var options = {
    componentRestrictions: {
      country: "it"
    }
  };

  var input = /** @type {!HTMLInputElement} */ (
    document.getElementById('pac-input'));

  var autocomplete = new google.maps.places.Autocomplete(input, options);
  autocomplete.bindTo('bounds', map);

  var infowindow = new google.maps.InfoWindow();
  var marker = new google.maps.Marker({
    map: map,
    anchorPoint: new google.maps.Point(0, -29),
  });

  autocomplete.addListener('place_changed', function() {
    infowindow.close();
    marker.setVisible(false);
    var place = autocomplete.getPlace();

    if (!place.geometry) {
      window.alert("Autocomplete's returned place contains no geometry");
      return;
    }

    // If the place has a geometry, then present it on a map.
    if (place.geometry.viewport) {
      map.fitBounds(place.geometry.viewport);
    } else {
      map.setCenter(place.geometry.location);
      map.setZoom(17); // Why 17? Because it looks good.
    }
    marker.setIcon( /** @type {google.maps.Icon} */ ({
      url: place.icon,
      size: new google.maps.Size(71, 71),
      origin: new google.maps.Point(0, 0),
      anchor: new google.maps.Point(17, 34),
      scaledSize: new google.maps.Size(35, 35)
    }));
    marker.setPosition(place.geometry.location);
    marker.setVisible(true);

    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(' ');
    }

    infowindow.setContent('<div><strong>' + place.name + '</strong><br>' + address);
    infowindow.open(map, marker);

    var adress_form = address;
    document.getElementById('adress').value = adress_form

    var lat_form = place.geometry.location.lat();
    document.getElementById('lat').value = lat_form

    var lng_form = place.geometry.location.lng();
    document.getElementById('lng').value = lng_form

    function extractFromAdress(components, type) {
      for (var i = 0; i < components.length; i++)
        for (var j = 0; j < components[i].types.length; j++)
          if (components[i].types[j] == type) return components[i].long_name;
      return "";
    }

    var town = extractFromAdress(place.address_components, "locality");
    document.getElementById('city').value = town;
  });
}
google.maps.event.addDomListener(window, 'load', initMap);

html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}
#map {
  height: 100%;
}
.controls {
  margin-top: 10px;
  border: 1px solid transparent;
  border-radius: 2px 0 0 2px;
  box-sizing: border-box;
  -moz-box-sizing: border-box;
  height: 32px;
  outline: none;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}
#pac-input {
  background-color: #fff;
  font-family: Roboto;
  font-size: 15px;
  font-weight: 300;
  margin-left: 12px;
  padding: 0 11px 0 13px;
  text-overflow: ellipsis;
  width: 300px;
}
#pac-input:focus {
  border-color: #4d90fe;
}
.pac-container {
  font-family: Roboto;
}
#type-selector {
  color: #fff;
  background-color: #4d90fe;
  padding: 5px 11px 0px 11px;
}
#type-selector label {
  font-family: Roboto;
  font-size: 13px;
  font-weight: 300;
}

<script src="https://maps.googleapis.com/maps/api/js?libraries=places"></script>
<input id="pac-input" class="controls" type="text" placeholder="Enter a location">

<div id="map" style="width:500px; height:500px;"></div>
<form method="post" action="a.php">
  <input placeholder="adress" type="text" id="adress" name="adress">
  <input placeholder="city" type="text" id="city" name="city">
  <input placeholder="lat" type="text" id="lat" name="lat">
  <input placeholder="lng" type="text" id="lng" name="lng">
  <input placeholder="latlng" type="text" id="latlng" name="latlng">
  <input placeholder="name" type="text" id="name" name="name">
  <input type="submit" value="inserisci">
</form>

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