[英]Google Map Event Listener does not seem to work
I have used the places map to search for a location and when user click on the marker i have created a Listener to zoom the map, but does not seem to work. 我已经使用地方地图搜索位置,并且当用户单击标记时,我创建了一个侦听器来缩放地图,但似乎无法正常工作。
I tried 我试过了
<script>
function initialize() {
var markers = [];
var map = new google.maps.Map(document.getElementById('map-canvas'), {
mapTypeId: google.maps.MapTypeId.ROADMAP
});
var defaultBounds = new google.maps.LatLngBounds(
new google.maps.LatLng(-33.8902, 151.1759),
new google.maps.LatLng(-33.8474, 151.2631));
map.fitBounds(defaultBounds);
// Create the search box and link it to the UI element.
var input = /** @type {HTMLInputElement} */(
document.getElementById('pac-input'));
map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);
var searchBox = new google.maps.places.SearchBox(
/** @type {HTMLInputElement} */(input));
// [START region_getplaces]
// Listen for the event fired when the user selects an item from the
// pick list. Retrieve the matching places for that item.
google.maps.event.addListener(searchBox, 'places_changed', function() {
var places = searchBox.getPlaces();
for (var i = 0, marker; marker = markers[i]; i++) {
marker.setMap(null);
}
// For each place, get the icon, place name, and location.
markers = [];
var bounds = new google.maps.LatLngBounds();
for (var i = 0, place; place = places[i]; i++) {
var image = {
url: place.icon,
size: new google.maps.Size(71, 71),
origin: new google.maps.Point(0, 0),
anchor: new google.maps.Point(17, 34),
scaledSize: new google.maps.Size(25, 25)
};
// Create a marker for each place.
var marker = new google.maps.Marker({
map: map,
icon: image,
title: place.name,
position: place.geometry.location
});
markers.push(marker);
bounds.extend(place.geometry.location);
}
map.fitBounds(bounds);
});
// [END region_getplaces]
// Bias the SearchBox results towards places that are within the bounds of the
// current map's viewport.
google.maps.event.addListener(map, 'bounds_changed', function() {
var bounds = map.getBounds();
searchBox.setBounds(bounds);
});
google.maps.event.addListener(marker, 'click', function () {
map.setZoom(13);
map.setCenter(marker.getPosition());
});
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
It did not seem to work, any suggestions? 它似乎没有用,有什么建议吗?
You are creating several markers in for
loop of event listener google.maps.event.addListener(searchBox, 'places_changed', function() {...}
. But event listener for marker is set outside of it. 您正在事件侦听器google.maps.event.addListener(searchBox, 'places_changed', function() {...}
for
循环中创建多个标记。但是标记的事件侦听器已在其外部设置。
It should be moved to place after marker creation: 创建标记后,应将其移至适当位置:
// Create a marker for each place.
var marker = new google.maps.Marker({
map: map,
icon: image,
title: place.name,
position: place.geometry.location
});
markers.push(marker);
google.maps.event.addListener(marker, 'click', function () {
map.setZoom(13);
map.setCenter(marker.getPosition());
});
bounds.extend(place.geometry.location);
}
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