我有以下问题
我在 html 表单中使用谷歌地图，用户可以在其中输入地址(自动完成(，然后标记转到该地点。标记是可拖动的。
我想要的是提取纬度和经度并将值传递给两个不同的输入文本
我正在关注这个 https://developers.google.com/maps/documentation/javascript/examples/places-searchbox
爪哇脚本
<script>
function initAutocomplete() {
var map = new google.maps.Map(document.getElementById('map'), {
center: {lat: -33.8688, lng: 151.2195},
zoom: 13,
mapTypeId: 'roadmap'
});
// Create the search box and link it to the UI element.
var input = document.getElementById('pac-input');
var searchBox = new google.maps.places.SearchBox(input);
map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);
// Bias the SearchBox results towards current map's viewport.
map.addListener('bounds_changed', function() {
searchBox.setBounds(map.getBounds());
});
var markers = [];
// Listen for the event fired when the user selects a prediction and retrieve
// more details for that place.
searchBox.addListener('places_changed', function() {
var places = searchBox.getPlaces();
if (places.length == 0) {
return;
}
// Clear out the old markers.
markers.forEach(function(marker) {
marker.setMap(null);
});
markers = [];
// For each place, get the icon, name and location.
var bounds = new google.maps.LatLngBounds();
places.forEach(function(place) {
if (!place.geometry) {
console.log("Returned place contains no geometry");
return;
}
var 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(25, 25)
};
// Create a marker for each place.
markers.push(new google.maps.Marker({
map: map,
icon: icon,
title: place.name,
position: place.geometry.location
}));
if (place.geometry.viewport) {
// Only geocodes have viewport.
bounds.union(place.geometry.viewport);
} else {
bounds.extend(place.geometry.location);
}
});
map.fitBounds(bounds);
});
}
</script>
这段代码运行良好，现在我想提取纬度和经度并在 HTML 表单内的输入文本中显示它们
input name="input_latitude" id="input_latitude" value=""
input name="input_longitude" id="input_longitude" value=""
我试过这样但没有用，因为我不知道如何放置这个
google.maps.event.addListener( marker, 'dragend', function ( event ) {
document.getElementById( "input_latitude" ).value = this.getPosition().lat();
document.getElementById( "input_longitude" ).value = this.getPosition().lng();
} );
谁能帮我？谢谢..
您可以通过提取 geometry.location lat 和 lng 属性的数据并将其作为值打印到相应的输入文本中来做到这一点。
var loc = place.geometry.location;
var templat = loc.lat();
var templng = loc.lng();
document.getElementById("lat").value = templat;
document.getElementById("lng").value = templng;
这是一个有效的JSdiffle：http://jsbin.com/dawutes/
我还在下面添加了代码片段：
function initAutocomplete() {
var map = new google.maps.Map(document.getElementById('map'), {
center: {lat: -33.8688, lng: 151.2195},
zoom: 13,
mapTypeId: 'roadmap'
});
var lat = document.getElementById('lat');
var lng = document.getElementById('lng');
// Create the search box and link it to the UI element.
var input = document.getElementById('pac-input');
var searchBox = new google.maps.places.SearchBox(input);
map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);
// Bias the SearchBox results towards current map's viewport.
map.addListener('bounds_changed', function() {
searchBox.setBounds(map.getBounds());
});
// Listen for the event fired when the user selects a prediction and retrieve
// more details for that place.
searchBox.addListener('places_changed', function() {
var places = searchBox.getPlaces();
if (places.length == 0) {
return;
}
// For each place, get the icon, name and location.
var bounds = new google.maps.LatLngBounds();
places.forEach(function(place) {
if (!place.geometry) {
console.log("Returned place contains no geometry");
return;
}
var loc = place.geometry.location;
var templat = loc.lat();
var templng = loc.lng();
document.getElementById("lat").value = templat;
document.getElementById("lng").value = templng;
if (place.geometry.viewport) {
// Only geocodes have viewport.
bounds.union(place.geometry.viewport);
} else {
bounds.extend(place.geometry.location);
}
});
map.fitBounds(bounds);
});
}#map {
height: 100%;
}
/* Optional: Makes the sample page fill the window. */
html,
body {
height: 100%;
margin: 0;
padding: 0;
}
#description {
font-family: Roboto;
font-size: 15px;
font-weight: 300;
}
#infowindow-content .title {
font-weight: bold;
}
#infowindow-content {
display: none;
}
#map #infowindow-content {
display: inline;
}
.pac-card {
margin: 10px 10px 0 0;
border-radius: 2px 0 0 2px;
box-sizing: border-box;
-moz-box-sizing: border-box;
outline: none;
box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
background-color: #fff;
font-family: Roboto;
}
#pac-container {
padding-bottom: 12px;
margin-right: 12px;
}
.pac-controls {
display: inline-block;
padding: 5px 11px;
}
.pac-controls label {
font-family: Roboto;
font-size: 13px;
font-weight: 300;
}
#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: 400px;
}
#pac-input:focus {
border-color: #4d90fe;
}
#title {
color: #fff;
background-color: #4d90fe;
font-size: 25px;
font-weight: 500;
padding: 6px 12px;
}
#target {
width: 345px;
}<input id="pac-input" class="controls" type="text" placeholder="Search Box">
<input id="lat" type="text" placeholder="Latitude">
<input id="lng" type="text" placeholder="Longitude">
<div id="map"></div>
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyA0wB2s8fFD1L9BBEWRKidcH31nrBZ4r0c&libraries=places&callback=initAutocomplete" async defer></script>你可以试试这个....
google.maps.event.addListener( marker, 'dragend', function ( event ) {
document.getElementById( "input_latitude" ).value = event.latLng.lat();
document.getElementById( "input_longitude" ).value = event.latLng.lng();
} );