我有一个简单的Google Map
,在json对象上添加了一些markers
循环。
我正在尝试为所有这些标记添加listener
来执行简单的操作(更改旋转)。标记被添加到地图上并且监听器被调用,但是当我单击其中一个标记时,操作始终在最新添加的标记上执行。
我如何获得射击标记?我认为方法是使用监听器函数的evt
参数,但我不知道如何。
我用firebug观察了evt参数,但没有结果。
以下是代码:
for(var i in _points){
_markers[i] = new google.maps.Marker({
position: {
lat: parseFloat(_points[i]._google_lat),
lng: parseFloat(_points[i]._google_lon)
},
icon: {
path: google.maps.SymbolPath.FORWARD_CLOSED_ARROW,
scale: 3,
rotation: parseInt(_points[i]._rotation)
},
map: _map,
title: _points[i]._obj_id
});
google.maps.event.addListener(_markers[i], 'click', function(evt){
//console.log(evt);
r = _markers[i].icon.rotation;
_markers[i].setIcon({
path: google.maps.SymbolPath.FORWARD_CLOSED_ARROW,
scale: 3,
rotation: r+15
});
});
}
答案 0 :(得分:1)
点击侦听器功能中的this
是对标记的引用:
google.maps.event.addListener(_markers[i], 'click', function(evt){
//console.log(evt);
r = this.getIcon().rotation;
this.setIcon({
path: google.maps.SymbolPath.FORWARD_CLOSED_ARROW,
scale: 3,
rotation: r+15
});
});
代码段
function initMap() {
// Create a map and center it on Manhattan.
var _map = new google.maps.Map(document.getElementById('map'), {
zoom: 10,
center: {
lat: 40.771,
lng: -73.974
}
});
for (var i in _points) {
_markers[i] = new google.maps.Marker({
position: {
lat: parseFloat(_points[i]._google_lat),
lng: parseFloat(_points[i]._google_lon)
},
icon: {
path: google.maps.SymbolPath.FORWARD_CLOSED_ARROW,
scale: 3,
rotation: parseInt(_points[i]._rotation)
},
map: _map,
title: _points[i]._obj_id
});
google.maps.event.addListener(_markers[i], 'click', function(evt) {
r = this.getIcon().rotation;
this.setIcon({
path: google.maps.SymbolPath.FORWARD_CLOSED_ARROW,
scale: 3,
rotation: r + 15
});
});
}
}
google.maps.event.addDomListener(window, "load", initMap);
var _markers = [];
var _points = [{
_google_lat: 40.7127837,
_google_lon: -74.0059413,
_obj_id: "A",
_rotation: 0
}, {
_google_lat: 40.735657,
_google_lon: -74.1723667,
_obj_id: "B",
_rotation: 90
}]
html,
body,
#map {
height: 100%;
margin: 0;
padding: 0;
}
<script src="https://maps.googleapis.com/maps/api/js"></script>
<div id="map"></div>