我已经实现了一个 javascript 菜单,允许用户使用 Google Fusion Table 覆盖更改为不同的地图视图。不幸的是,我的下拉菜单不能单独或一起使用。例如,有人只想查看“中东”地区的港口,或者有人想查看“印度次大陆”地区的港口和“ICD”类型的港口。
第二个问题似乎是融合表中未显示的标记。港口的“运输”和“ICD”有不同的颜色。
这是我到目前为止的工作:
<!DOCTYPE>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Fusion Map</title>
<style>
body {margin:0 auto; width:960px;}
#map_div {height:550px; width:100%; margin-top:50px;}
</style>
<script src="http://maps.google.com/maps/api/js?sensor=false" type="text/javascript"></script>
<script>
var tableid = 1102368;
var layer = new google.maps.FusionTablesLayer(1102368);
function initialize() {
var ports = new google.maps.LatLng(35.173808, 37.236325);
var myOptions = {
center: ports,
zoom: 3,
mapTypeId:google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById('map_div'),
myOptions);
layer.setMap(map);
}
function refreshFusion() {
var qry = "SELECT PortName, 'Region' FROM " + tableid;
var region = document.getElementById('ddRegion').value;
var type = document.getElementById('ddType').value;
var filters = [];
if(type != '') {
filters.push("'Type' CONTAINS '" + type + "'");
}
if(type != '') {
filters.push("'Region' CONTAINS '" + region + "'");
}
if(filters.lenght > 0) {
qry += " WHERE " + filters.join(" AND ");
}
layer.setQuery(qry);
}
</script>
</head>
<body onload="initialize();">
<div id="map_div"></div>
<div>
<h3>Region</h3>
<select id="ddRegion" style="width: 150px;" onchange="refreshFusion();">
<option value="">All</option>
<option value="Middle East">Middle East</option>
<option value="Red Sea">Red Sea</option>
<option value="East Mediterranean">East Mediterranean</option>
<option value="West Mediterranean">West Mediterranean</option>
<option value="Adriatic">Adriatic</option>
<option value="Black Sea">Black Sea</option>
<option value="North Africa">North Africa</option>
<option value="Indian Sub-Continent">Indian Sub-Continent</option>
</select>
<h3>Type</h3>
<select id="ddType" style="width: 150px;" onchange="refreshFusion();">
<option value="">All</option>
<option value="Shipping">Shipping</option>
<option value="ICD">ICD</option>
</select>
</div>
</body>
</html>
这是融合表:链接
这是实时代码:链接
非常感谢任何和所有帮助!