Question

我必须向谷歌地图添加多个标记，但数据位于外部json文件中。

目前我正在尝试使用jquery getJSON运行它。但它根本不起作用，并且控制台没有返回任何错误！

    google.maps.event.addDomListener(window, 'load', initialize);



    function initialize() {

        var map_canvas = document.getElementById('map1'); 


        var map_options = {
            center: new google.maps.LatLng(44.5403, -78.5463), 
            zoom: 8, 
            mapTypeId: google.maps.MapTypeId.ROADMAP 
        };

        var map = new google.maps.Map(map_canvas, map_options); 



        $.getJSON('map_points.json', function(data) { 
            $.each( data.points, function(i, value) {
            var myLatlng =  new google.maps.LatLng(value.lat, value.lon);
            alert(myLatlng);
            var marker = new google.maps.Marker({
            position: myLatlng,
            map: map,
            title:"Hello World!"
        });

            });


    });


    } //End initialize()

和Json

{

"points":[
    {"id":1,"lat":44.5403,"lon":-79.5463},
    {"id":2,"lat":45.5403,"lon":-78.5463},
    {"id":3,"lat":45.5403,"lon":-76.5463},
    {"id":4,"lat":45.5403,"lon":-77.5463}
]


}

Answer 1

我刚刚测试了下面的代码＆amp;它正在发挥作用。试试吧：

<html>
<head>
<title>Eg. Google Maps Marker using External JSON</title>
<style type="text/css">
html { height: 100% }
body { height: 100%; margin: 0; padding: 0 }
#map_canvas { height: 100% }
</style>
<script type="text/javascript" src="http://code.jquery.com/jquery-latest.min.js"></script> 
<script type="text/javascript" src = "http://maps.google.com/maps/api/js?sensor=false">

</script>
<script type="text/javascript">
function initialize() {

var mapOptions = {
center: new google.maps.LatLng(44.5403, -78.5463),
zoom: 5,
mapTypeId: google.maps.MapTypeId.ROADMAP
};

var infoWindow = new google.maps.InfoWindow();
var map = new google.maps.Map(document.getElementById("map_canvas"), mapOptions);

  $.getJSON('map_points.json', function(data) { 
            $.each( data.points, function(i, value) {

                var myLatlng = new google.maps.LatLng(value.lat, value.lon);
                alert(myLatlng);
                var marker = new google.maps.Marker({
                position: myLatlng,
                map: map,
                title: "text "+value.lon
                });

            });
});


}

</script>
</head>
<body onload="initialize()">
<form id="form1" runat="server">
<div id="map_canvas" style="width: 500px; height: 400px"></div>
</form>
</body>
</html>

从外部json添加标记到谷歌地图？

1 个答案: