【发布时间】：2015-05-11 22:13:15
【问题描述】：
我的代码应该定义用户的地理位置并为其分配值pos。然后我想使用pos 的值在单击按钮时创建一个标记。
但是，我没有得到一个点正在绘制。位置和地图都是已经分配的全局变量，所以无法弄清楚为什么我没有得到响应。
任何帮助将不胜感激！
Javascript：
var map;
var service;
var marker;
var pos;
var infowindow;
var marker2;
function initialize() {
var mapOptions = {
zoom: 14,
mapTypeId: google.maps.MapTypeId.ROADMAP,
scrollwheel: true,
panControl: true,
streetViewControl: true,
mapTypeControl: true,
};
map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
//HTML5 geolocation
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(function (position) {
pos = new google.maps.LatLng(position.coords.latitude, position.coords.longitude);
infowindow = new google.maps.InfoWindow({
map: map,
position: pos,
content: 'You Are Here'
});
var request = {
location: pos,
radius: 1000,
types: ['doctor']
};
map.setCenter(pos);
infowindow = new google.maps.InfoWindow();
var service = new google.maps.places.PlacesService(map);
service.nearbySearch(request, callback);
},
function () {
handleNoGeolocation(true);
});
} else {
handleNoGeolocation(false);
}
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(51.5334410,-0.1396180),
content: content
};
var infowindow = new google.maps.InfoWindow(options);
map.setCenter(options.position);
pos = options.position;
var request = {
location: pos,
radius: 1000,
types: ['hospital']
};
infowindow = new google.maps.InfoWindow();
var service = new google.maps.places.PlacesService(map);
service.nearbySearch(request, callback);
}
function callback(results, status) {
if (status == google.maps.places.PlacesServiceStatus.OK) {
for (var i = 0; i < results.length; i++) {
createMarker(results[i]);
}
}
}
function createMarker(place) {
var placeLoc = place.geometry.location;
var marker = new google.maps.Marker({
map: map,
position: place.geometry.location
});
google.maps.event.addListener(marker, 'click', function () {
infowindow.setContent(place.vicinity);
infowindow.open(map, this);
});
}
}
google.maps.event.addDomListener(window, 'load', initialize);
document.getElementById("button").addEventListener("click", function(){
marker2 = new google.maps.Marker({
position : pos,
map: map
})
});
HTML：
<!doctype html>
<html lang="en">
<head>
<title>Title</title>
<meta name="keywords" content="TBC" />
<meta name="description" content="TBC" />
<meta http-equiv="X-UA-Compatible" content="IE=Edge" />
<meta name=viewport content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="assets/css/main.css">
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false&libraries=places"></script>
<script src="assets/js/jquery-2.1.1.min.js"></script>
<script src="assets/js/main.js"></script>
</head>
<body>
<div id="header">
<img src="https://www.bhf.org.uk/~/media/images/admin/logo/bhf-logo.png" width="40" />
<h1><strong>British Heart Foundation:</strong>
<br />Defibrillator Locator</h1>
<div class="clearfix"> </div>
</div>
<div id="map-canvas"></div>
<div id="firstResult" class="results"> <button id="button"> Register </button> </div>
<div class="results"> Test </div>
<div class="results"><a class="address" href= "C:\Users\jacholt\Documents\Analytics\BHF - 11.05- Page 2\index.html"> Report a Defibrillator </a> </div>
<div class="instruct"> <a class="address" href="https://www.bhf.org.uk/heart-health/nation-of-lifesavers/using-defibrillators"> How to use a defibrillator</a> </div>
</body>
</html>
【问题讨论】：
标签： javascript html google-maps button dom-events