谷歌地图API - 谷歌没有定义的错误

问题描述

我尝试使用谷歌地图API在我的骨干应用程序，但我得到一个错误。这里是我的code：

I am try to use the Google Maps API in my Backbone application, but I get an error. Here is my code:

var MyView = MyParrentView.extend({
    events: {
       //my events
    },
    initialize: function (options) {
        $('head').append('<script src="https://www.google.com/jsapi?key=MyAPIKey" type="text/javascript"></script>');


   if (google != undefined) {
                google.load(
                    "earth",
                    "1",
                    {
                        "other_params":"sensor=false"
                    }
                );
            }
  }
 ,

在如果（！谷歌=未定义）{行，我得到的错误：的ReferenceError：没有定义谷歌。任何人都可以点我在正确的方向来解决这个问题或者为什么发生这种情况？我是pretty初次使用谷歌的API。

At if (google != undefined) { line, I get the error: ReferenceError: google is not defined. Can anyone point me in the right direction to fix this or why this is happening? I'm pretty new to using Google's API.

感谢

推荐答案

试试这个：直到脚本加载的回调将不会被执行

Try this: The callback won't be executed until the script is loaded.

var MyView = MyParrentView.extend({
    events: {
       //my events
    },
    initialize: function (options) {
        $.ajax({url: 'https://www.google.com/jsapi?key=MyAPIKey&language=EN&callback=onGoogleMapsLoaded',dataType: 'script'});
    },

    onGoogleMapsLoaded : function(){
        if (google != undefined) {
            google.load(
                "earth",
                "1",
                {
                    "other_params":"sensor=false"
                }
            );
        }
    }
}

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