Google Maps foreach循环中的多个信息窗口 [英] Google Maps multiple info Windows in foreach loop
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问题描述
我正在地图上显示多个标记,并希望获取每个infowindow
以显示每个位置的内容.
I am showing multiple markers on a map and am looking to get each infowindow
to show the content for each location.
我几乎已经有了这段代码,但是,我无法获得infowindow
来从当前迭代的数组中获取值.如果我规定了数组的索引,它将起作用.
I'm almost there with this code however, I can not get the infowindow
to get the value from the array for the current iteration. It works if I stipulate the index of the array.
例如
//Gives the 6th object in the array and shows the correct content
var content= (apartments[6].info);
//Gives Uncaught TypeError: Cannot read property 'info' of undefined
var content= (apartments[i].info);
我的代码
var apartments = jQuery.parseJSON(result);
//console.log(array);
var map = new google.maps.Map(document.getElementById('map-canvas'), {
center: new google.maps.LatLng(53.408371, -2.991573),
zoom: 5
});
var geocoder = new google.maps.Geocoder();
var infowindow = new google.maps.InfoWindow();
google.maps.event.addListenerOnce(map, 'tilesloaded', function() {
for (var i = 0; i < apartments.length; ++i) {
geocoder.geocode({ address: apartments[i].postcode + ' UK', }, function(result, status) {
if (status == 'OK' && result.length > 0) {
var marker = new google.maps.Marker({
position: result[0].geometry.location,
map: map,
});
google.maps.event.addListener(marker, 'click', function() {
var content = (apartments[i].info);
infowindow.setContent(content);
infowindow.open(map, this);
});
}
});
}
});
推荐答案
异步函数在循环中常见的问题(地理编码器是异步的).到回调函数运行时,i
已超过输入数组的末尾.
Common issue with asynchronous functions in loops (the geocoder is asynchronous). By the time the callback function runs, i
is past the end of the input array.
您可以通过函数关闭来解决它:
You can solve it with function closure:
for (var i = 0; i < apartments.length; ++i) {
geocodeAddress(apartments[i], infowindow, map);
}
function geocodeAddress(address, infowindow, map) {
var geocoder = new google.maps.Geocoder();
geocoder.geocode({
address: address.postcode + ' UK',
}, function(result, status) {
if (status == 'OK' && result.length > 0) {
var marker = new google.maps.Marker({
position: result[0].geometry.location,
map: map,
});
google.maps.event.addListener(marker, 'click', function() {
var content = (address.info);
infowindow.setContent(content);
infowindow.open(map, this);
});
} else {
alert("geocoder returns status:" + status)
}
});
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