Cos*_*min 4 javascript jquery google-maps gmaps.js
当用户点击复选框时,我想显示或隐藏一些标记.我正在使用Gmaps.js,负责这个的代码是:
// Check if the user wants to display points of interest
$("#poi").click(function() {
var poi_markers = [];
if ($("#poi").is(':checked')) {
// Get points of interest and display them on the map
$.ajax({
type: "POST",
url: "/ajax/poi.php",
dataType: "JSON",
cache: false,
success: function(data) {
$.each(data, function(key, value) {
poi_marker = {
marker: {
lat: value.latitude,
lng: value.longitude,
icon: '/images/marker-sight.png',
infoWindow: {
content: value.name
}
}
}
poi_markers.push(poi_marker);
});
console.log(poi_markers);
map.addMarkers(poi_markers);
}
});
} else {
map.removeMarkers(poi_markers);
}
});
Run Code Online (Sandbox Code Playgroud)
示例JSON:
[{"name":"Biserica Neagra","latitude":"45.640981","longitude":"25.587723"}]
Run Code Online (Sandbox Code Playgroud)
在Firebug中我收到此错误:"未捕获的异常:未定义纬度或经度.".
我究竟做错了什么?
ble*_*lex 11
该addMarkers()
函数将一组标记作为参数.但是你给它一个带有marker属性的对象数组.他们应该这样声明:
poi_marker = {
lat: value.latitude,
lng: value.longitude,
infoWindow: {
content: value.name
}
}
Run Code Online (Sandbox Code Playgroud)
该removeMarkers()
函数不带任何参数,因为它会删除所有标记.它应该这样称呼:
map.removeMarkers();
Run Code Online (Sandbox Code Playgroud)
为了清楚起见,并且因为我认为你将弄清楚如何做到这一点,我将省略Ajax部分,并假设你收集它们后所有的标记定义如下:
var realMarkers = {},
gMarkers = {
bars: [
{lat:"45.640981",lng:"25.587723",infoWindow:{content:"Irish Pub"}},
{lat:"45.645911",lng:"25.582753",infoWindow:{content:"Beer King"}}
],
transportation: [
{lat:"45.645981",lng:"25.590723",infoWindow:{content:"Subway"}},
{lat:"45.640981",lng:"25.583723",infoWindow:{content:"Train"}},
{lat:"45.636981",lng:"25.580723",infoWindow:{content:"Airport"}}
]
};
Run Code Online (Sandbox Code Playgroud)
如您所见,我使用了一个对象gMarkers
,其中g代表Gmaps.js,因为这些标记与真正的Google Maps标记不同,您需要这些标记.真实的标记将存储在realMarkers
变量中.
由于Gmaps.js不提供添加/删除某些标记的方法,因此我创建了2个函数,您可以将这些函数添加到代码中.
addMarkersOfType()
/* Takes the poi type as a parameter */
GMaps.prototype.addMarkersOfType = function (poi_type) {
// clear markers of this type
realMarkers[poi_type]=[];
// for each Gmaps marker
for(var i=0; i<gMarkers[poi_type].length; i++){
// add the marker
var marker = map.addMarker(gMarkers[poi_type][i]);
// save it as real marker
realMarkers[poi_type].push(marker);
}
}
Run Code Online (Sandbox Code Playgroud)
removeMarkersOfType()
/* Takes the poi type as a parameter */
GMaps.prototype.removeMarkersOfType = function (poi_type) {
// for each real marker of this type
for(var i=0; i<gMarkers[poi_type].length; i++){
// remove the marker
realMarkers[poi_type][i].setMap(null);
}
// clear markers of this type
realMarkers[poi_type]=[];
}
Run Code Online (Sandbox Code Playgroud)
$("#bar_poi").click(function() {
if ($(this).is(':checked'))
map.addMarkersOfType("bars");
else
map.removeMarkersOfType("bars");
});
Run Code Online (Sandbox Code Playgroud)
归档时间: |
|
查看次数: |
10904 次 |
最近记录: |