这两个文件引入有什么不同的用处吗？
<script type="text/javascript" src="https://www.imooc.com/data/jquery.validate.js"></script>
<script type="text/javascript" src="https://www.imooc.com/data/jquery.validate.messages_cn.js"></script>
发一下xml文件AutoCompleteTextView部分的代码看看
在编程的时候可以先使用a=a+1的形式，但是要知道有a++这种表达式，等熟悉了之后自然而然的就会掌握这几个表达式
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第一个是基础文件，第二个是中文扩展，你可以点击这个网址进去看看