Google Maps Api 相当新。我有一组数据,我想循环浏览并在地图上绘制。看起来相当简单,但我发现的所有多标记教程都相当复杂。
让我们以谷歌网站的数据数组为例:
var locations = [ ['Bondi Beach', -33.890542, 151.274856, 4], ['Coogee Beach', -33.923036, 151.259052, 5], ['Cronulla Beach', -34.028249, 151.157507, 3], ['Manly Beach', -33.80010128657071, 151.28747820854187, 2], ['Maroubra Beach', -33.950198, 151.259302, 1] ];
我只是想绘制所有这些点并infoWindow在单击以显示名称时弹出一个窗口。
infoWindow
这是我可以将其简化为的最简单的方法:
<!DOCTYPE html> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8" /> <title>Google Maps Multiple Markers</title> <script src="http://maps.google.com/maps/api/js?key=YOUR_API_KEY" type="text/javascript"></script> </head> <body> <div id="map" style="width: 500px; height: 400px;"></div> <script type="text/javascript"> var locations = [ ['Bondi Beach', -33.890542, 151.274856, 4], ['Coogee Beach', -33.923036, 151.259052, 5], ['Cronulla Beach', -34.028249, 151.157507, 3], ['Manly Beach', -33.80010128657071, 151.28747820854187, 2], ['Maroubra Beach', -33.950198, 151.259302, 1] ]; var map = new google.maps.Map(document.getElementById('map'), { zoom: 10, center: new google.maps.LatLng(-33.92, 151.25), mapTypeId: google.maps.MapTypeId.ROADMAP }); var infowindow = new google.maps.InfoWindow(); var marker, i; for (i = 0; i < locations.length; i++) { marker = new google.maps.Marker({ position: new google.maps.LatLng(locations[i][1], locations[i][2]), map: map }); google.maps.event.addListener(marker, 'click', (function(marker, i) { return function() { infowindow.setContent(locations[i][0]); infowindow.open(map, marker); } })(marker, i)); } </script> </body> </html>
馃懆鈥嶐炼。在 Codepen 上编辑/分叉。
截屏
将回调参数传递给方法时会发生一些关闭魔术addListener。如果您不熟悉闭包的工作原理,这可能是一个相当棘手的话题。如果是这种情况,我建议查看以下 Mozilla 文章以获得简要介绍:
addListener
开发中心:使用闭包](https://developer.mozilla.org/en/Core_JavaScript_1.5_Guide/Working_with_Closures)