如何实现位置下拉菜单?
How do I implement a location drop down menu?
我想实现一个位置下拉菜单,就像 Airbnb.com and Postmates.com 上显示的那样。
我希望用户能够在世界任何地方输入一个位置,并只显示该位置的结果。
我假设位置下拉菜单与 Google 地图有关,但我似乎无法弄清楚。
我相信你想要实现的是自动完成功能,这可以通过Google Maps Places API - Place Autocomplete实现。
请查看代码段中的示例:
// 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">
function initMap() {
var map = new google.maps.Map(document.getElementById('map'), {
center: {lat: -33.8688, lng: 151.2195},
zoom: 13
});
var card = document.getElementById('pac-card');
var input = document.getElementById('pac-input');
var types = document.getElementById('type-selector');
var strictBounds = document.getElementById('strict-bounds-selector');
map.controls[google.maps.ControlPosition.TOP_RIGHT].push(card);
var autocomplete = new google.maps.places.Autocomplete(input);
// Bind the map's bounds (viewport) property to the autocomplete object,
// so that the autocomplete requests use the current map bounds for the
// bounds option in the request.
autocomplete.bindTo('bounds', map);
// Set the data fields to return when the user selects a place.
autocomplete.setFields(
['address_components', 'geometry', 'icon', 'name']);
var infowindow = new google.maps.InfoWindow();
var infowindowContent = document.getElementById('infowindow-content');
infowindow.setContent(infowindowContent);
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) {
// User entered the name of a Place that was not suggested and
// pressed the Enter key, or the Place Details request failed.
window.alert("No details available for input: '" + place.name + "'");
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.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(' ');
}
infowindowContent.children['place-icon'].src = place.icon;
infowindowContent.children['place-name'].textContent = place.name;
infowindowContent.children['place-address'].textContent = address;
infowindow.open(map, marker);
});
// Sets a listener on a radio button to change the filter type on Places
// Autocomplete.
function setupClickListener(id, types) {
var radioButton = document.getElementById(id);
radioButton.addEventListener('click', function() {
autocomplete.setTypes(types);
});
}
setupClickListener('changetype-all', []);
setupClickListener('changetype-address', ['address']);
setupClickListener('changetype-establishment', ['establishment']);
setupClickListener('changetype-geocode', ['geocode']);
document.getElementById('use-strict-bounds')
.addEventListener('click', function() {
console.log('Checkbox clicked! New state=' + this.checked);
autocomplete.setOptions({strictBounds: this.checked});
});
}
/* Always set the map height explicitly to define the size of the div
* element that contains the map. */
#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;
}
<div class="pac-card" id="pac-card">
<div>
<div id="title">
Autocomplete search
</div>
<div id="type-selector" class="pac-controls">
<input type="radio" name="type" id="changetype-all" checked="checked">
<label for="changetype-all">All</label>
<input type="radio" name="type" id="changetype-establishment">
<label for="changetype-establishment">Establishments</label>
<input type="radio" name="type" id="changetype-address">
<label for="changetype-address">Addresses</label>
<input type="radio" name="type" id="changetype-geocode">
<label for="changetype-geocode">Geocodes</label>
</div>
<div id="strict-bounds-selector" class="pac-controls">
<input type="checkbox" id="use-strict-bounds" value="">
<label for="use-strict-bounds">Strict Bounds</label>
</div>
</div>
<div id="pac-container">
<input id="pac-input" type="text"
placeholder="Enter a location">
</div>
</div>
<div id="map"></div>
<div id="infowindow-content">
<img src="" width="16" height="16" id="place-icon">
<span id="place-name" class="title"></span><br>
<span id="place-address"></span>
</div>
<!-- Replace the value of the key parameter with your own API key. -->
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyAj0aaMu_aY6xiDSWH0ac_4pqN_l-opwmI&libraries=places&callback=initMap"
async defer></script>
地点自动完成的其他用例可能对您有所帮助:
Place Autocomplete Address Form
Place Autocomplete Hotel Search
Place Autocomplete Restricted to Multiple Countries
如果您想构建自己的 UI,您可以通过 Place Autocomplete Service
以编程方式获取地点自动完成结果
希望对您有所帮助。
我想实现一个位置下拉菜单,就像 Airbnb.com and Postmates.com 上显示的那样。
我希望用户能够在世界任何地方输入一个位置,并只显示该位置的结果。
我假设位置下拉菜单与 Google 地图有关,但我似乎无法弄清楚。
我相信你想要实现的是自动完成功能,这可以通过Google Maps Places API - Place Autocomplete实现。
请查看代码段中的示例:
// 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">
function initMap() {
var map = new google.maps.Map(document.getElementById('map'), {
center: {lat: -33.8688, lng: 151.2195},
zoom: 13
});
var card = document.getElementById('pac-card');
var input = document.getElementById('pac-input');
var types = document.getElementById('type-selector');
var strictBounds = document.getElementById('strict-bounds-selector');
map.controls[google.maps.ControlPosition.TOP_RIGHT].push(card);
var autocomplete = new google.maps.places.Autocomplete(input);
// Bind the map's bounds (viewport) property to the autocomplete object,
// so that the autocomplete requests use the current map bounds for the
// bounds option in the request.
autocomplete.bindTo('bounds', map);
// Set the data fields to return when the user selects a place.
autocomplete.setFields(
['address_components', 'geometry', 'icon', 'name']);
var infowindow = new google.maps.InfoWindow();
var infowindowContent = document.getElementById('infowindow-content');
infowindow.setContent(infowindowContent);
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) {
// User entered the name of a Place that was not suggested and
// pressed the Enter key, or the Place Details request failed.
window.alert("No details available for input: '" + place.name + "'");
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.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(' ');
}
infowindowContent.children['place-icon'].src = place.icon;
infowindowContent.children['place-name'].textContent = place.name;
infowindowContent.children['place-address'].textContent = address;
infowindow.open(map, marker);
});
// Sets a listener on a radio button to change the filter type on Places
// Autocomplete.
function setupClickListener(id, types) {
var radioButton = document.getElementById(id);
radioButton.addEventListener('click', function() {
autocomplete.setTypes(types);
});
}
setupClickListener('changetype-all', []);
setupClickListener('changetype-address', ['address']);
setupClickListener('changetype-establishment', ['establishment']);
setupClickListener('changetype-geocode', ['geocode']);
document.getElementById('use-strict-bounds')
.addEventListener('click', function() {
console.log('Checkbox clicked! New state=' + this.checked);
autocomplete.setOptions({strictBounds: this.checked});
});
}
/* Always set the map height explicitly to define the size of the div
* element that contains the map. */
#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;
}
<div class="pac-card" id="pac-card">
<div>
<div id="title">
Autocomplete search
</div>
<div id="type-selector" class="pac-controls">
<input type="radio" name="type" id="changetype-all" checked="checked">
<label for="changetype-all">All</label>
<input type="radio" name="type" id="changetype-establishment">
<label for="changetype-establishment">Establishments</label>
<input type="radio" name="type" id="changetype-address">
<label for="changetype-address">Addresses</label>
<input type="radio" name="type" id="changetype-geocode">
<label for="changetype-geocode">Geocodes</label>
</div>
<div id="strict-bounds-selector" class="pac-controls">
<input type="checkbox" id="use-strict-bounds" value="">
<label for="use-strict-bounds">Strict Bounds</label>
</div>
</div>
<div id="pac-container">
<input id="pac-input" type="text"
placeholder="Enter a location">
</div>
</div>
<div id="map"></div>
<div id="infowindow-content">
<img src="" width="16" height="16" id="place-icon">
<span id="place-name" class="title"></span><br>
<span id="place-address"></span>
</div>
<!-- Replace the value of the key parameter with your own API key. -->
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyAj0aaMu_aY6xiDSWH0ac_4pqN_l-opwmI&libraries=places&callback=initMap"
async defer></script>
地点自动完成的其他用例可能对您有所帮助:
Place Autocomplete Address Form
Place Autocomplete Hotel Search
Place Autocomplete Restricted to Multiple Countries
如果您想构建自己的 UI,您可以通过 Place Autocomplete Service
以编程方式获取地点自动完成结果希望对您有所帮助。