Javascript一直在说Google未定义
[英]Javascript keeps saying Google is undefined
问题描述
I'm trying to use the example code from https://developers.google.com/maps/documentation/javascript/examples/layer-kml (with a few modifications, like lat/long) but every time I try to run it, it says google is undefined. 
我正在尝试使用https://developers.google.com/maps/documentation/javascript/examples/layer-kml中的示例代码（进行了一些修改，例如lat / long），但是每次我尝试运行它时，它说Google未定义。 As a programmer, I'm pretty green-how do I fix it/prevent it, and what does it mean? 作为一名程序员，我非常环保-如何修复/预防它，这意味着什么？
2 个解决方案
解决方案1
0 2014-11-06 15:38:35
Because it is, you need to get Goggle's API first: 因为是这样，所以您需要先获取Goggle的API：
<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?key=API_KEY"></script>
...
<script>
/* Code Here */
</script>
Look here for how to get an API key in the developers guide. 在开发人员指南中查找此处如何获取API密钥 。
If you look at the HTML+JavaScript notice they included the API at the top: 如果您查看HTML + JavaScript，请注意，它们在顶部包含API：
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp"></script>
解决方案2
0 2014-11-06 15:49:12
In the link you sent, there's a section called "Getting Started": https://developers.google.com/maps/documentation/javascript/tutorial 在您发送的链接中，有一个名为“入门”的部分： https : //developers.google.com/maps/documentation/javascript/tutorial
In there you will find out that a basic structure of a HTML page that is going to work with the API functionalities needs a declaration of the Javascript containing the API code (ie, this code will also provide this 'google' object that you need). 在其中，您将发现要使用API功能的HTML页面的基本结构需要声明包含API代码的Javascript（即，该代码还将提供您需要的“ google”对象） 。
https://developers.google.com/maps/documentation/javascript/tutorial#Loading_the_Maps_API https://developers.google.com/maps/documentation/javascript/tutorial#Loading_the_Maps_API
<html>
<head>
<script type="text/javascript"
src="https://maps.googleapis.com/maps/api/js?key=API_KEY">
</script>
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