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vue(前端)判断文件是否存在

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vue(前端)判断文件是否存在

我后端路由，动态添加路由，返回的component要require,如果后端添加的component文件不存在的话，导入会报错，怎么判断文件是否存在


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怎么会有这种问题,肯定是先有文件才能动态添加啊.比如一共有a,b,c,d四个路由匹配a,b,c,d四个文件,但是后台动态只有a,b,c,那总不能吧d文件删了吧,肯定是文件数 >= 动态路由数


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