如何在Google地图中标记多个位置。 Latitude和Longitute作为json响应从我的桌子中获取。请检查以下代码和json回复并更正我？
当我alert(myCenter)纬度和经度显示正确但未在地图上正确显示时
Json编码
[{"id":"1","lat":"9.9710364","lng":"76.2382596","address":"Ernakulam, pra"},{"id":"2","lat":"9.5946677"
,"lng":"76.5030831","address":"Kochi pra"},{"id":"3","lat":"8.8862925","lng":"76.5850831","address":"Kollam
pra"},{"id":"4","lat":"8.4998965","lng":"76.8543216","address":"Trivandrum pra"}]
代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
<title>Bootstrap 101 Template</title>
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous">
<!-- Optional theme -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap-theme.min.css" integrity="sha384-fLW2N01lMqjakBkx3l/M9EahuwpSfeNvV63J5ezn3uZzapT0u7EYsXMjQV+0En5r" crossorigin="anonymous">
</head>
<body>
<h1>Load Multiple Marker</h1>
<div id="googleMap" style="width: 800px; height: 500px;">
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<!-- Map -->
<script src="http://maps.googleapis.com/maps/api/js"></script>
<script>
$(function(){
$.ajax({
url: 'geo-locations.php',
success:function(data){
//Loop through each location.
$.each(data, function(){
//Plot the location as a marker
var myCenter = new google.maps.LatLng(this.lat, this.lng);
//alert(myCenter)
function initialize()
{
var mapProp = {
center: myCenter,
zoom:5,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("googleMap"),mapProp);
var marker = new google.maps.Marker({
position: myCenter,
title:'Click to zoom'
});
marker.setMap(map);
// Zoom to 9 when clicking on marker
google.maps.event.addListener(marker,'click',function() {
map.setZoom(9);
map.setCenter(marker.getPosition());
});
}
google.maps.event.addDomListener(window, 'load', initialize);
});
}
});
});
</script>
<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js" integrity="sha384-0mSbJDEHialfmuBBQP6A4Qrprq5OVfW37PRR3j5ELqxss1yVqOtnepnHVP9aJ7xS" crossorigin="anonymous"></script>
</body>
</html>
答案 0 :(得分：0)
无需为每个标记初始化地图实例，您可以将流程更改为：
初始化地图
加载数据后，在地图上放置标记
示例
$(function () {
$.ajax({
url: 'https://rawgit.com/vgrem/e2dda2a255a24df92bff/raw/d9c694b635612ee405c7d16c355dca19adb6380c/geo-locations.json',
success: function (data) {
initialize(data);
}
});
});
function addMarker(map,position){
var marker = new google.maps.Marker({
position: position,
title: 'Click to zoom'
});
marker.setMap(map);
// Zoom to 9 when clicking on marker
google.maps.event.addListener(marker, 'click', function () {
map.setZoom(9);
map.setCenter(marker.getPosition());
});
}
function initialize(data) {
var mapProp = {
zoom: 5,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("googleMap"), mapProp);
var bounds = new google.maps.LatLngBounds();
$.each(data,function(pos) {
var pos = new google.maps.LatLng(this.lat, this.lng);
bounds.extend(pos);
addMarker(map,pos);
});
map.fitBounds(bounds);
}<h1>Load Multiple Marker</h1>
<div id="googleMap" style="width: 800px; height: 500px;">
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script src="http://maps.googleapis.com/maps/api/js"></script>