VM7942:9 app.js错误: ReferenceError: data is not defined

报错的原因是因为变量"data"没有定义。根据提供的信息，没有具体指明出错的代码行，但可以推测出错误发生在"app.js"文件中的第9行。解决这个问题的方法是在"app.js"文件中定义变量"data"，确保它在使用之前已经被正确赋值。具体的定义和赋值方式将取决于代码的具体逻辑和需求。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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