Javascript 信息窗口不工作
我花了几个小时试图弄明白这一点,但没有运气。希望有人能给我一个解决办法 我有几个多边形,我想在单击它们时从siteName显示它们的值。我没有得到一个错误,但我也没有得到信息窗口显示 提前感谢您的帮助Javascript 信息窗口不工作,javascript,google-maps-api-3,click,geojson,Javascript,Google Maps Api 3,Click,Geojson,我花了几个小时试图弄明白这一点,但没有运气。希望有人能给我一个解决办法 我有几个多边形,我想在单击它们时从siteName显示它们的值。我没有得到一个错误,但我也没有得到信息窗口显示 提前感谢您的帮助 <!DOCTYPE html> <html> <head> <p id="demo">coordinates</p> </br> <p id="coords">coordinates</p> &l
<!DOCTYPE html>
<html>
<head>
<p id="demo">coordinates</p>
</br>
<p id="coords">coordinates</p>
<style>
html, body, #map_canvas { margin: 0; padding: 0; height: 100%; }
</style>
<script
src="https://maps.googleapis.com/maps/api/js?sensor=false&libraries=visualization,MVCObject">
</script>
<script>
var map;
function initialize() {
var kansas_city = new google.maps.LatLng(39.00495613,-94.64780668);
var mapOptions = {
zoom: 10,
center: kansas_city,
mapTypeId: google.maps.MapTypeId.TERRAIN
};
map = new google.maps.Map(document.getElementById('map_canvas'), mapOptions);
// Create a <script> tag and set the geoJSON file as the source.
var script = document.createElement('script');
// (In this example we use a locally stored copy instead.)
script.src = 'sector.json';
document.getElementsByTagName('head')[0].appendChild(script);
}
// Loop through the results array and place a marker for each
// set of coordinates.
var siteNames;
window.sector_callback = function(results) {
for (var i = 0, len = results.features.length; i < len; i++) {
var coords = results.features[i].geometry.coordinates[0];
siteNames = results.features[i].properties.Name; // added for site names
var path = [];
for ( var j = 0, len2 = coords.length; j < len2; j++ ){ // pull out each set of coords and create a map object
path.push(new google.maps.LatLng(coords[j][1], coords[j][0]));
}
var polygons = new google.maps.Polygon({
path: path,
map: map
});
var contentString = siteNames;
var infowindow = new google.maps.InfoWindow({
});
google.maps.event.addListener(polygons, 'click', function() {
infowindow.open(map,polygons);
content: contentString
});
google.maps.event.addListener(polygons, 'mouseover', function() {
var currentPolygon = this;
currentPolygon.setOptions({ // setOptions is a method and properties below
fillOpacity: 0.45,
fillColor: "#FF0000",
})
});
google.maps.event.addListener(polygons, 'mouseout', function() {
var currentPolygon = this;
currentPolygon.setOptions({
fillOpacity: 0.35,
fillColor: "#000000"
})
});
}
}
</script>
</head>
<body onload="initialize()">
<div id="map_canvas"></div>
</body>
坐标
坐标
html,body,#map_canvas{margin:0;padding:0;height:100%;}
var映射;
函数初始化(){
var kansas_city=new google.maps.LatLng(39.00495613,-94.64780668);
变量映射选项={
缩放:10,
中心:堪萨斯城,
mapTypeId:google.maps.mapTypeId.TERRAIN
};
map=new google.maps.map(document.getElementById('map_canvas'),mapOptions);
//创建一个标记并将geoJSON文件设置为源。
var script=document.createElement('script');
//(在本例中,我们使用本地存储的副本。)
script.src='sector.json';
document.getElementsByTagName('head')[0].appendChild(脚本);
}
//循环遍历结果数组,并为每个结果放置一个标记
//一组坐标。
var站点名称;
window.sector_callback=函数(结果){
对于(变量i=0,len=results.features.length;i
可能不是唯一的问题,但肯定是一个问题。文本<代码>内容:内容字符串在无处的中间挂出;我想你想要这样:
var infowindow = new google.maps.InfoWindow({
content: contentString
});
google.maps.event.addListener(polygons, 'click', function() {
infowindow.open(map,polygons);
});
编辑
还有第二个问题:infowindow
在循环的每次迭代中都会被覆盖。它需要咖喱:
google.maps.event.addListener(polygons, 'click', (function(infowindow) {
return function() {
infowindow.open(map,polygons);
content: contentString
}
})(infowindow)
);
将infowindow内容与多边形关联的一种方法是使用。您还需要设置infowindow的显示位置,如果您没有将其与标记一起使用,则唯一允许的锚点(至少当前)是标记 一个可能的“createClickablePoly”函数:
function createClickablePoly(poly, html) {
google.maps.event.addListener(poly, 'click', function(evt) {
infowindow.setContent(html);
infowindow.setPosition(evt.latLng);
infowindow.open(map);
});
}