我是 Google Maps API 的新手，我认为我缺少一些基本的东西。我正在从 JSON 文件加载位置并在 map 上创建标记。我希望能够单击标记并显示信息窗口。现在，当我单击标记时，不会显示任何内容。
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<title>ListingCharts3</title>
<style>
/* Always set the map height explicitly to define the size of the div
* element that contains the map. */
#map {
height: 100%;
}
/* Optional: Makes the sample page fill the window. */
html, body {
height: 100%;
margin: 0;
padding: 0;
}
</style>
</head>
<body>
<div id="map"></div>
<script>
var map;
var infowindow;
function initMap() {
map = new google.maps.Map(document.getElementById('map'),
{
zoom: 4,
center: new google.maps.LatLng(41, -96),
mapTypeId: google.maps.MapTypeId.ROADMAP
});
map.data.loadGeoJson('https://DATA_FILE_URL.json');
}
// Loop through the results array and place a marker for each set of coordinates.
window.eqfeed_callback = function (results) {
for (var i = 0; i < results.features.length; i++) {
var coords = results.features[i].geometry.coordinates;
var latLng = new google.maps.LatLng(coords[1], coords[0]);
var marker = new google.maps.Marker
({
position: latLng,
map: map,
title: results.features[i].address
});
//var content = results.features[i].address;
var content = "foo";
var infowindow = new google.maps.InfoWindow()
google.maps.event.addListener(marker, 'click', (function (marker, content, infowindow) {
return function () {
infowindow.setContent(content);
infowindow.open(map, marker);
};
})(marker, content, infowindow));
}
}
</script>
<script async defer
src="https://maps.googleapis.com/maps/api/js?key=MY_API_KEY&callback=initMap">
</script>
</body>
</html>
最佳答案
friend 帮我解决了这个问题，这段代码有效:
var map;
function initMap() {
map = new google.maps.Map(document.getElementById('map'), {
zoom: 4,
center: new google.maps.LatLng(41, -96),
mapTypeId: google.maps.MapTypeId.ROADMAP
});
var infowindow = new google.maps.InfoWindow();
map.data.loadGeoJson('https://JSON_FILE_URL.json', null, function (features) {
map.data.addListener('click', function(event) {
console.log(event);
var myHTML = event.feature.getProperty("address") + ", " +
event.feature.getProperty("state") + ", " +
event.feature.getProperty("zipcode");
infowindow.setContent("<div style='width:auto; text-align: center;'>" + myHTML + "</div>");
infowindow.setPosition(event.feature.getGeometry().get());
infowindow.setOptions({pixelOffset: new google.maps.Size(0,-30)});
infowindow.open(map);
});
});
}
<div id="map"></div>
<script async defer src="https://maps.googleapis.com/maps/api/js?key=MY_API_KEY&callback=initMap">
关于javascript - 谷歌地图 : How to display infowindows when you click on markers，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/40701178/