我的网站上有一个嵌入式 map ，其中包含指向我的办公室地址的标记点。但是，我需要通过网络浏览器中的地理定位自动向用户显示从当前位置到我的办公室位置的路线。可能吗？
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>Find a route using Geolocation and Google Maps API</title>
<script src="http://maps.google.com/maps/api/js?sensor=true"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script>
function calculateRoute(from, to) {
// Center initialized to Naples, Italy
var myOptions = {
zoom: 10,
center: new google.maps.LatLng(40.84, 14.25),
mapTypeId: google.maps.MapTypeId.ROADMAP
};
// Draw the map
var mapObject = new google.maps.Map(document.getElementById("map"), myOptions);
var directionsService = new google.maps.DirectionsService();
var directionsRequest = {
origin: from,
destination: to,
travelMode: google.maps.DirectionsTravelMode.DRIVING,
unitSystem: google.maps.UnitSystem.METRIC
};
directionsService.route(
directionsRequest,
function(response, status)
{
if (status == google.maps.DirectionsStatus.OK)
{
new google.maps.DirectionsRenderer({
map: mapObject,
directions: response
});
}
else
$("#error").append("Unable to retrieve your route<br />");
}
);
}
$(document).ready(function() {
// If the browser supports the Geolocation API
if (typeof navigator.geolocation == "undefined") {
$("#error").text("Your browser doesn't support the Geolocation API");
return;
}
$("#from-link, #to-link").click(function(event) {
event.preventDefault();
var addressId = this.id.substring(0, this.id.indexOf("-"));
navigator.geolocation.getCurrentPosition(function(position) {
var geocoder = new google.maps.Geocoder();
geocoder.geocode({
"location": new google.maps.LatLng(position.coords.latitude, position.coords.longitude)
},
function(results, status) {
if (status == google.maps.GeocoderStatus.OK)
$("#" + addressId).val(results[0].formatted_address);
else
$("#error").append("Unable to retrieve your address<br />");
});
},
function(positionError){
$("#error").append("Error: " + positionError.message + "<br />");
},
{
enableHighAccuracy: true,
timeout: 10 * 1000 // 10 seconds
});
});
$("#calculate-route").submit(function(event) {
event.preventDefault();
calculateRoute($("#from").val(), "govandi"));
});
});
</script>
<style type="text/css">
#map {
width: 500px;
height: 400px;
margin-top: 10px;
}
</style>
</head>
<body>
<h1>Calculate your route</h1>
<form id="calculate-route" name="calculate-route" action="#" method="get">
<label for="from">From:</label>
<input type="text" id="from" name="from" required="required" placeholder="An address" size="30" />
<a id="from-link" href="#">Get my position</a>
<br />
<label for="to">To:</label>
<input type="text" id="to" name="to" placeholder="Another address" size="30" />
<a id="to-link" href="#">Get my position</a>
<br />
<input type="submit" />
<input type="reset" />
</form>
<div id="map"></div>
<p id="error"></p>
</body>
</html>
最佳答案
我稍微修改了 https://www.sitepoint.com/find-a-route-y 中的代码使用-the-geolocation-and-the-google-maps-api/使用选择的 html 表单从用户位置到设置目的地进行旅程规划。
如果它对任何人都有用。
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>Find a route using Geolocation and Google Maps API</title>
<script src="http://maps.google.com/maps/api/js?sensor=true"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script>
function calculateRoute(from, to) {
// Center initialized somewhere near London
var myOptions = {
zoom: 10,
center: new google.maps.LatLng(53, -1),
mapTypeId: google.maps.MapTypeId.ROADMAP
};
// Draw the map
var mapObject = new google.maps.Map(document.getElementById("map"), myOptions);
var directionsService = new google.maps.DirectionsService();
var directionsRequest = {
origin: from,
destination: to,
travelMode: google.maps.DirectionsTravelMode.TRANSIT,
unitSystem: google.maps.UnitSystem.METRIC
};
directionsService.route(
directionsRequest,
function(response, status)
{
if (status == google.maps.DirectionsStatus.OK)
{
new google.maps.DirectionsRenderer({
map: mapObject,
directions: response
});
}
else
$("#error").append("Unable to retrieve your route<br />");
}
);
}
$(document).ready(function() {
// If the browser supports the Geolocation API
if (typeof navigator.geolocation == "undefined") {
$("#error").text("Your browser doesn't support the Geolocation API");
return;
}
$("#from-link, #to-link").click(function(event) {
event.preventDefault();
var addressId = this.id.substring(0, this.id.indexOf("-"));
navigator.geolocation.getCurrentPosition(function(position) {
var geocoder = new google.maps.Geocoder();
geocoder.geocode({
"location": new google.maps.LatLng(position.coords.latitude, position.coords.longitude)
},
function(results, status) {
if (status == google.maps.GeocoderStatus.OK)
$("#" + addressId).val(results[0].formatted_address);
else
$("#error").append("Unable to retrieve your address<br />");
});
},
function(positionError){
$("#error").append("Error: " + positionError.message + "<br />");
},
{
enableHighAccuracy: true,
timeout: 10 * 1000 // 10 seconds
});
});
$("#calculate-route").submit(function(event) {
event.preventDefault();
calculateRoute($("#from").val(), $("#to").val());
});
});
</script>
<style type="text/css">
#map {
width: 500px;
height: 400px;
margin-top: 10px;
}
</style>
</head>
<body>
<h1>Calculate your route</h1>
<form id="calculate-route" name="calculate-route" action="#" method="get">
<label for="from">From:</label>
<input type="text" id="from" name="from" required="required" placeholder="An address" size="30" />
<a id="from-link" href="#">Get my position</a>
<br />
<label for="to">To:</label>
<select id="to">
<option value="51.5548885,-0.108438">Arsenal's Emirates Stadium</option>
<option value="51.481663,-0.1931505">Chelsea's Stamford Bridge</option>
</select>
<br />
<input type="submit" />
<input type="reset" />
</form>
<div id="map"></div>
<p id="error"></p>
关于javascript - 如何在嵌入式谷歌地图中获取从访问者当前位置到我的位置的方向，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/36234820/