api - Uncaught ReferenceError : ufa is not defined using Google visualization API

Question

我遇到过因为这个错误导致可视化图表不显示的情况:

Uncaught ReferenceError :未定义 ufa

这是调用js所在的链接。非常感谢!

Answer 1

确保您的网页调用 jsapi和 google.load()一次。从 Google Developer's Site 中引用了以下详细信息

You may be using the Google Loader incorrectly.

Only load jsapi once. No matter how many charts you have on your web page, you should have one and only one call like this:

<script type="text/javascript" src="https://www.google.com/jsapi"></script> // Do this ONCE.

Ideally, call google.load only once, with all the packages you'll need for your web page.

像下面这样加载多个包，

 <script>
       google.load("visualization", "1", {packages: ["corechart", "timeline"]});
 </script>