Too many re-renders. React limits the number of renders to prevent an infinite loop
**报错:Error: Too many re-renders. React limits the number of renders to prevent an infinite loop.**一般是更新state的问题图中的1是在执行setState时会不停的重新执行CheckUpload函数,这行语句之下的内容都不会执行,而第二种方式则是在页面渲染完成后再执行setState的更新,hook
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