下面的代码显示地图并在UL中显示结果。我有2个按钮，显示火车站和购物中心。最初，它会正确显示结果，但如果我点击另一个按钮，它将显示重复的值。
的Javascript
var map;
var pos;
var distance;
var distancearray = [];
var markers = [];
//=================================================================
function initialize() {
googleMapsLoaded = false;
map = new google.maps.Map(document.getElementById('map'), {
zoom: 13
});
// Try HTML5 geolocation
if(navigator.geolocation) {
navigator.geolocation.getCurrentPosition(function(position) {
pos = new google.maps.LatLng(position.coords.latitude,position.coords.longitude);
var request = {
location:pos,
radius:3000, //3000 Meters
type:initialtype
};
infowindow = new google.maps.InfoWindow();
var service = new google.maps.places.PlacesService(map);
service.nearbySearch(request,callback);
infowindow = new google.maps.InfoWindow({
map: map,
position: pos,
content: 'You Are Here',
});
map.setCenter(pos);
}, function() {
handleNoGeolocation(true);
});
} else {
// Browser doesn't support Geolocation
handleNoGeolocation(false);
}
function callback(results, status) {
if (status !== google.maps.places.PlacesServiceStatus.OK) {
return;
}
else{
for (var i = 0; i < results.length; i++)
markers.push(createMarker(results[i]));
}
} //end callback function
/* listen to the tilesloaded event
if that is triggered, google maps is loaded successfully for sure */
google.maps.event.addListener(map, 'tilesloaded', function() {
googleMapsLoaded = true;
// document.getElementById("mapnotification").innerHTML = "Map Loaded!";
$("#mapnotification").hide();
$("#map-loaded").show();
$("#map-loaded").css('visibility', 'hidden');
$("#map-notloaded").hide();
//clear the listener, we only need it once
google.maps.event.clearListeners(map, 'tilesloaded');
});
setTimeout(function() {
if (!googleMapsLoaded) {
//we have waited 7 secs, google maps is not loaded yet
document.getElementById("mapnotification").innerHTML = "Map NOT Loaded! Make sure you have stable internet connnection";
$("#mapnotification").hide();
$("#map-notloaded").show();
$("#map-loaded").hide();
}
}, 7000);
function createMarker(place) { // Create Marker and the Icon of the marker
// var bounds = new google.maps.LatLngBounds();
var markerlat;
var markerlon;
var p2;
var output="";
var placesList = document.getElementById('places');
placeLoc = place.geometry.location;
var marker = new google.maps.Marker({
map: map,
position: place.geometry.location,
icon: {
path: google.maps.SymbolPath.CIRCLE,
scale: 8,
fillColor:'00a14b',
fillOpacity:0.3,
fillStroke: '00a14b',
strokeWeight:4,
strokeOpacity: 0.7
}, // end icon
}); //end of marker variable
markerlat = marker.getPosition().lat()
markerlon = marker.getPosition().lng()
console.log("Markers Lat" + markerlat);
console.log("Markers Lon" + markerlon );
p2 = new google.maps.LatLng(markerlat, markerlon);
distance = [calcDistance(pos, p2)];
//calculates distance between two points in km's
function calcDistance(p1, p2) {
return (google.maps.geometry.spherical.computeDistanceBetween(p1, p2) / 1000).toFixed(2);
}
distancearray.push([distance, place.name]);
distancearray.sort();
console.log("distancearraylength" + distancearray.length);
console.log("Summary" + distancearray);
for(var i = 0; i < distancearray.length; i++){
output += '<li>' + distancearray[i][1] + " " + distancearray[i][0]+ " " + "km" + '</li>';
placesList.innerHTML = output;
}
google.maps.event.addListener(marker, 'click', function() { //show place name when marker clicked
infowindow.setContent(place.name);
infowindow.open(map, marker);
}); // end of marker show place name
} // end createMarker function
function handleNoGeolocation(errorFlag) {
if (errorFlag) {
var content = 'Error: The Geolocation service failed.';
} else {
var content = 'Error: Your browser doesn\'t support geolocation.';
}
var options = {
map: map,
position: new google.maps.LatLng(60, 105),
content: content
};
var infowindow = new google.maps.InfoWindow(options);
map.setCenter(options.position);
} // End handleNoGeolocation function
} //End function initialize
//==========================================================================================================//
$(document).on('pagebeforeshow','#itemPanel2', function(e, data){ // Loading of Nearest Place Options
bindchoicesclick();
function bindchoicesclick(){
$("#subway_station").on("click",function(){
// alert("subway");
markers = [];
pos="";
while(distancearray.length > 0) {
distancearray.pop();
}
while(markers.length > 0) {
markers.pop();
}
//$("#places").empty();
initialtype = ['subway_station'];
buttonholder = "Nearest Station";
$("#find").val(buttonholder);
$("#find").button("refresh");
initialize();
});
$("#shopping_mall").on("click",function(){
// alert("stores");
markers = [];
pos="";
while(distancearray.length > 0) {
distancearray.pop();
}
while(markers.length > 0) {
markers.pop();
}
// distancearray.splice(0).
// $("#places").empty();
initialtype = ['shopping_mall'];
buttonholder = "Nearest Mall";
$("#find").val(buttonholder);
$("#find").button("refresh");
initialize();
});
}
});
HTML
<h1 id="headerField">Nearby Search</h1>
</div>
<a href="#globa_map" class="ui-btn" id="subway_station">Search Nearest Train Station</a>
<a href="#globa_map" class="ui-btn" id="shopping_mall">Search Nearest Mall</a>
</div>
<!--Train Stations -->
<div id="globa_map" data-role="page">
<div data-role="header">
<a href="#" data-transition="slide" data-rel="back" data-icon="arrow-l">Back</a>
<a href="#" data-role="button" id="maprefresh" data-mini="true" data-icon="refresh" data-inline="true"class="ui-btn-right">Refresh</a>
<h1 id="headerField">Global</h1>
</div>
<div data-role="content">
<!-- <input type="button" id="refreshmap" value="Refresh"> -->
<p id="mapnotification">Please wait while the map is loading...</p>
<p id="map-loaded">Map Loaded!</p>
<p id="map-notloaded">Map NOT Loaded! Make sure you have stable internet connnection</p>
<h2>Results</h2>
<ul id="places"></ul>
<button id="more">More results</button>
<div id="map" style="height:400px;">
</div>
</div>