Google地图刷新标记 [英] Google Maps Refresh Markers
本文介绍了Google地图刷新标记的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想刷新我的所有标记。我使用了一个setInterval函数。但是，我如何删除我的标记？在这个时候，标记被添加到旧的标记...这不是我想要的。
I want to refresh all my markers. I used a setInterval function. But how do i delete my markers? At this time the markers are added to the old markers ... thats not what i intended.
所以这是我的代码：
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<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://maps.googleapis.com/maps/api/js?key=xyz&sensor=true">
</script>
<script type="text/javascript">
var map;
function initialize() {
var mapOptions = {
center: new google.maps.LatLng(48.137, 11.577),
zoom: 14,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById("map_canvas"),
mapOptions);
}
</script>
<script type="text/javascript" src="http://code.jquery.com/jquery-latest.min.js"></script>
</head>
<body onload="initialize()">
<div id="map_canvas" style="width:100%; height:100%"></div>
<script type="text/javascript">
setInterval(function() {
$(document).ready(function() {
$.getJSON('./url.php', function(data) {
var cars = data.rec.vehicles.vehicles;
$.each(cars, function(key, data) {
var LatLng = new google.maps.LatLng(data.position.latitude, data.position.longitude);
var imageh = data.model;
var bild = "/" + imageh + ".png";
if(data.fuelState <=25)
{bild="/EMPTY.png";}
var bild1= "/" + imageh + "1.png";
var tanken1="";
if(data.fuelState<=25){tanken1="TANKEN";}
console.log(bild);
var contentString ='<h1>'+data.model+" "+data.carName+'</h1><IMG BORDER="0" ALIGN="center" SRC="' + data.model + '1.png"><br><br>Kennzeichen: '+ data.licensePlate +'<br>Fahrgestellnummer: '+data.vin+'<br>Fuellstand: ' + data.fuelState + '% <IMG BORDER="0" ALIGN="absmiddle" SRC="' + data.fuelState + '.png"><br>Zustand: <IMG BORDER="0" align="absmiddle" SRC="' + data.innerCleanliness + '.png"><br>Adresse: ' +data.address+'<br><a href="https://de.drive-now.com/php/metropolis/vehicle_details?vin='+ data.vin +'">Dieses Fahrzeug jetzt Buchen!</a><br><br>'+tanken1;
var infowindow = new google.maps.InfoWindow({
content: contentString
});
var marker = new google.maps.Marker({
position: LatLng,
title: data.model,
icon: bild
});
google.maps.event.addListener(marker, 'click', function() {
infowindow.open(map,marker);
google.maps.event.addListener(map, 'click', function() {if(infowindow){infowindow.close();}});
});
marker.setMap(map);
});
});
});
clearMarkers();
}, 10000);
$(document).ready(function() {
$.getJSON('./PetrolStations.txt', function(data) {
$.each(data, function(key, data) {
var LatLng = new google.maps.LatLng(data.lat, data.lng);
var bild1 = "/PETROL.png";
var contentString1 = data.name;
var infowindow = new google.maps.InfoWindow({
content: contentString1
});
var marker = new google.maps.Marker({
position: LatLng,
title: data.lng,
icon: bild1
});
google.maps.event.addListener(marker, 'click', function() {
infowindow.open(map,marker);
google.maps.event.addListener(map, 'click', function() {if(infowindow){infowindow.close();}});
});
marker.setMap(map);
});
});
});
</script>
</body>
</html>
感谢：））
推荐答案
要移除它们，遍历数组，调用.setMap（）方法
Keep references to the markers that have been created (in an array).
保留对已创建标记的引用（在数组中）空）在每个标记。
To remove them, iterate through the array calling .setMap(null) on each marker.
这篇关于Google地图刷新标记的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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