谷歌映射API只在使用AJAX时抛出“未捕获的ReferenceError:谷歌未定义”

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:

我有一个使用谷歌Maps API显示地图的页面。当我直接加载页面时，会出现映射。但是，当我尝试使用AJAX加载页面时，我得到的错误是:

Uncaught ReferenceError: google is not defined

Why is this?

这是为什么呢?

This is the page with the map:

这是有地图的页面:

<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>

And this the page with the AJAX call:

这是AJAX调用的页面:

<!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>

Thanks for your help.

谢谢你的帮助。

6 个解决方案

#1

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

默认情况下，在文档完成加载之后，无法加载API，您需要异步加载它。

modify the page with the map:

用地图修改页面:

<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>

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

更多细节请看:https://*.com/questions/14184956/async-google-maps-api- api-v3 undefin- is-not-a-function/14185834#14185834

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

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

#2

I know this answer is not directly related to this questions' issue but in some cases the "Uncaught ReferenceError: google is not defined" issue will occur if your js file is being called prior to the google maps api you're using...so DON'T DO this:

我知道这个答案与这个问题没有直接关系，但在某些情况下，如果在使用的谷歌maps api之前调用js文件，就会出现“未捕获的ReferenceError:谷歌未定义”问题。所以不要这样做:

<script type ="text/javascript" src ="SomeJScriptfile.js"></script>
<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?v=3.exp"></script>

#3

At a guess, you're initialising something before your initialize function: var directionsService = new google.maps.DirectionsService();

猜猜看，在初始化函数:var directionsService =新的google.maps.DirectionsService()之前，您正在初始化某个对象;

Move that into the function, so it won't try and execute it before the page is loaded.

将其移动到函数中，这样它就不会在加载页面之前尝试并执行它。

var directionsDisplay, directionsService;
var map;
function initialize() {
  directionsService = new google.maps.DirectionsService();
  directionsDisplay = new google.maps.DirectionsRenderer();

#4

For me

对我来说

Adding this line

添加这一行

<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>

Before this line.

在这条线。

<script id="microloader" type="text/javascript" src=".sencha/app/microloader/development.js"></script>

worked

工作

#5

Maybe using

也许使用

<body onload="initialize();">

instead of

而不是

$(function(){ 
     initialize();
});

can help you.

可以帮助你。

#6

Might not be relevant for everyone but this little detail was causing mine not to work:

可能不是每个人都相关，但这个小细节导致我的工作失败:

Change div from this:

改变div从这个:

<div class="map">

To this:

<div id="map">

#1