是的，它是免费的。它写在官方页面中：
对所有用途完全免费：商业、政府、个人或教育性的。
如需文档，请点击此链接。
编辑：你真的没有下载它。您可以在代码中添加以下内容：
<script type="text/javascript" src="http://www.google.com/jsapi"></script>
然后开始使用它，如此处< /a>.
如果您确实想查看其内部外观，可以将其粘贴到浏览器地址栏：http://www .google.com/jsapi
Yes, it is free. It is written in the official page:
Completely free for all uses:commercial, governmental, personal oreducational.
For documentation follow this link.
Edit:You don't really download it. You include the following in your code:
Then you start using it as shown here.
If you really want to see how it looks like inside, you can paste this to your browser address bar: http://www.google.com/jsapi
它完全免费。您可以从下面的链接查看不同的图表
http://code.google.com /apis/ajax/playground/?type=visualization
its completely free. You can check the different chart from below link
http://code.google.com/apis/ajax/playground/?type=visualization
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是的，它是免费的。它写在官方页面中：
如需文档，请点击此链接。
编辑：
你真的没有下载它。您可以在代码中添加以下内容：
然后开始使用它，如此处< /a>.
如果您确实想查看其内部外观，可以将其粘贴到浏览器地址栏：http://www .google.com/jsapi
Yes, it is free. It is written in the official page:
For documentation follow this link.
Edit:
You don't really download it. You include the following in your code:
Then you start using it as shown here.
If you really want to see how it looks like inside, you can paste this to your browser address bar: http://www.google.com/jsapi
它完全免费。您可以从下面的链接查看不同的图表
http://code.google.com /apis/ajax/playground/?type=visualization
its completely free. You can check the different chart from below link
http://code.google.com/apis/ajax/playground/?type=visualization