谷歌地图API抛出"未捕获的Ref​​erenceError:谷歌是没有定义"只有当使用AJAX

人气:1,049 发布:2022-09-11 标签: ajax google-maps-api-3

问题描述

我有一个使用谷歌地图API来显示地图的页面。当我直接加载页面,显示的地图。然而,当我尝试加载使用AJAX页面,我得到的错误:

I have a page that uses the Google Maps API to display a map. When I load the page directly, the map appears. However, when I try to load the page using AJAX, I get the error:

Uncaught ReferenceError: google is not defined

这是为什么?

Why is this?

这是与地图的页面:

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script>
<script>
var directionsDisplay;
var directionsService = new google.maps.DirectionsService();
var map;
function initialize() {
  directionsDisplay = new google.maps.DirectionsRenderer();
  var chicago = new google.maps.LatLng(41.850033, -87.6500523);
  var mapOptions = { zoom:7, mapTypeId: google.maps.MapTypeId.ROADMAP, center: chicago }
  map = new google.maps.Map(document.getElementById("map_canvas"), mapOptions);
  directionsDisplay.setMap(map);
}
$(document).ready(function(e) { initialize() });
</script>
<div id="map_canvas" style="height: 354px; width:713px;"></div>

这与AJAX调用的页面:

And this the page with the AJAX call:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
</head>
<body>
<script>
$(document).ready(function(e) {
    $('button').click(function(){
        $.ajax({
            type: 'GET', url: 'map-display',
            success: function(d) { $('#a').html(d); }
        })
    });
});
</script>
<button>Call</button>
<div id="a"></div>
</body>
</html>

感谢您的帮助。

Thanks for your help.

推荐答案

该API不能被加载后,该文件已完成加载默认情况下,你需要异步加载它。

The API can't be loaded after the document has finished loading by default, you'll need to load it asynchronous.

修改页面图:

<div id="map_canvas" style="height: 354px; width:713px;"></div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false&callback=initialize"></script>
<script>
var directionsDisplay,
    directionsService,
    map;

function initialize() {
  var directionsService = new google.maps.DirectionsService();
  directionsDisplay = new google.maps.DirectionsRenderer();
  var chicago = new google.maps.LatLng(41.850033, -87.6500523);
  var mapOptions = { zoom:7, mapTypeId: google.maps.MapTypeId.ROADMAP, center: chicago }
  map = new google.maps.Map(document.getElementById("map_canvas"), mapOptions);
  directionsDisplay.setMap(map);
}

</script>

有关详细看看:http://stackoverflow.com/questions/14184956/async-google-maps-api-v3-undefined-is-not-a-function/14185834#14185834

For more details take a look at: http://stackoverflow.com/questions/14184956/async-google-maps-api-v3-undefined-is-not-a-function/14185834#14185834

例如:http://jsfiddle.net/doktormolle/zJ5em/

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