fix(body): 修复 addEventListener 事件处理函数为空 #557
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描述
我发现在
body/index.jsx中，并没有找到this.dealKeydownEvent，但在挂载时监听了keydown事件，由于没有找到这个方法，所以传递给addEventListener的事件处理函数是一个undefined，导致我在一些环境下产生错误