[英]Get latitude and longitude based on location name with Google Autocomplete API
[英]How to get the latitude and longitude in autocomplete search google api
在這里,我使用的是Google Map API,如果我搜索他們提供的地址,街道地址,州,城市,郵政編碼和國家/地區,現在一切正常,我想獲取該特定地址的經度和緯度。
JAVASCRIPT
//此示例使用Google Places API的自動填充功能//顯示一個地址表單,以幫助用戶填寫信息。
// This example requires the Places library. Include the libraries=places
// parameter when you first load the API. For example:
// <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=places">
var placeSearch, autocomplete;
var componentForm = {
street_number: 'short_name',
route: 'long_name',
locality: 'long_name',
administrative_area_level_1: 'short_name',
country: 'long_name',
postal_code: 'short_name'
};
function initAutocomplete() {
// Create the autocomplete object, restricting the search to geographical
// location types.
autocomplete = new google.maps.places.Autocomplete(
/** @type {!HTMLInputElement} */(document.getElementById('autocomplete')),
{types: ['geocode']});
// When the user selects an address from the dropdown, populate the address
// fields in the form.
autocomplete.addListener('place_changed', fillInAddress);
}
function fillInAddress() {
// Get the place details from the autocomplete object.
var place = autocomplete.getPlace();
for (var component in componentForm) {
document.getElementById(component).value = '';
document.getElementById(component).disabled = false;
}
// Get each component of the address from the place details
// and fill the corresponding field on the form.
for (var i = 0; i < place.address_components.length; i++) {
var addressType = place.address_components[i].types[0];
if (componentForm[addressType]) {
var val = place.address_components[i][componentForm[addressType]];
document.getElementById(addressType).value = val;
}
}
}
// Bias the autocomplete object to the user's geographical location,
// as supplied by the browser's 'navigator.geolocation' object.
function geolocate() {
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(function(position) {
var geolocation = {
lat: position.coords.latitude,
lng: position.coords.longitude
};
var circle = new google.maps.Circle({
center: geolocation,
radius: position.coords.accuracy
});
autocomplete.setBounds(circle.getBounds());
});
}
}
HTML
<div id="locationField">
<input id="autocomplete" placeholder="Enter your address"
onFocus="geolocate()" type="text"></input>
</div>
<table id="address">
<tr>
<td class="label">Street address</td>
<td class="slimField"><input class="field" id="street_number"
disabled="true"></input></td>
<td class="wideField" colspan="2"><input class="field" id="route"
disabled="true"></input></td>
</tr>
<tr>
<td class="label">City</td>
<!-- Note: Selection of address components in this example is typical.
You may need to adjust it for the locations relevant to your app. See
https://developers.google.com/maps/documentation/javascript/examples/places-autocomplete-addressform
-->
<td class="wideField" colspan="3"><input class="field" id="locality"
disabled="true"></input></td>
</tr>
<tr>
<td class="label">State</td>
<td class="slimField"><input class="field"
id="administrative_area_level_1" disabled="true"></input></td>
<td class="label">Zip code</td>
<td class="wideField"><input class="field" id="postal_code"
disabled="true"></input></td>
</tr>
<tr>
<td class="label">Country</td>
<td class="wideField" colspan="3"><input class="field"
id="country" disabled="true"></input></td>
</tr>
</table>
<script src="https://maps.googleapis.com/maps/api/js?libraries=places" type="text/javascript"></script> <script type="text/javascript"> function initialize() { var input = document.getElementById('searchTextField'); var autocomplete = new google.maps.places.Autocomplete(input); 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('latitude'+' '+lat+','+ 'longitude'+' '+long); document.getElementById('city2').value = place.name; document.getElementById('cityLat').value = place.geometry.location.lat(); document.getElementById('cityLng').value = place.geometry.location.lng(); //alert("This function is working!"); //alert(place.name); // alert(place.address_components[0].long_name); }); } google.maps.event.addDomListener(window, 'load', initialize); </script> <input id="searchTextField" type="text" size="50" placeholder="Enter a location" autocomplete="on" runat="server" /> <input type="hidden" id="city2" name="city2" /> <input type="hidden" id="cityLat" name="cityLat" /> <input type="hidden" id="cityLng" name="cityLng" />
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