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javascript 能否判断文件是否存在???

我想知道 javascript 能否根据一个文件地址路径 判断它是否存在的?
我弄了一个vue 动态菜单。我想判断一下 component 组件文件是否存在 如果不存在 我就 continue 出去,不把这个路由push进去。有无办法能判断呢。不通过 node来,就是单纯的vue javascript


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H5 fileReader


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