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是否可以通過onclick激活地理位置js?我可以激活Google Maps API地理位置嗎?
如果我在地圖中包含地理位置代碼(http://code.google.com/apis/maps/documentation/javascript/basics.html#DetectingUserLocation),它可以正常工作,但會啓動代碼onload。
我想要做的是給用戶一個按鈕的地理定位選項。我試着將相關的代碼移入一個onclick()函數,但似乎並沒有這樣做。
這裏是我的代碼:
function initialize() {
var latlng = new google.maps.LatLng(51.5146984674518, -0.0723123550415039);
var myOptions = {
zoom: 14,
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP,
mapTypeControl: true,
mapTypeControlOptions: {
style: google.maps.MapTypeControlStyle.HORIZONTAL_BAR,
position: google.maps.ControlPosition.RIGHT_BOTTOM
},
panControl: true,
panControlOptions: {
position: google.maps.ControlPosition.TOP_RIGHT
},
zoomControl: true,
zoomControlOptions: {
style: google.maps.ZoomControlStyle.LARGE,
position: google.maps.ControlPosition.TOP_RIGHT
},
streetViewControl: false,
};
var map = new google.maps.Map(document.getElementById("energymap"),
myOptions);
}
$('a#geolocate').click(function() {
// Try W3C Geolocation (Preferred)
if(navigator.geolocation) {
browserSupportFlag = true;
navigator.geolocation.getCurrentPosition(function(position) {
initialLocation = new google.maps.LatLng(position.coords.latitude,position.coords.longitude);
map.setCenter(initialLocation);
}, function() {
handleNoGeolocation(browserSupportFlag);
});
// Try Google Gears Geolocation
} else if (google.gears) {
browserSupportFlag = true;
var geo = google.gears.factory.create('beta.geolocation');
geo.getCurrentPosition(function(position) {
initialLocation = new google.maps.LatLng(position.latitude,position.longitude);
map.setCenter(initialLocation);
}, function() {
handleNoGeoLocation(browserSupportFlag);
});
// Browser doesn't support Geolocation
} else {
browserSupportFlag = false;
handleNoGeolocation(browserSupportFlag);
}
function handleNoGeolocation(errorFlag) {
if (errorFlag == true) {
alert("Geolocation service failed.");
initialLocation = newyork;
} else {
alert("Your browser doesn't support geolocation. We've placed you in Siberia.");
initialLocation = siberia;
}
map.setCenter(initialLocation);
}
});
謝謝你,我一直在尋找一種方法,從onload移動到onclick按鈕,這個工作很好。 –