Web page upload file not working on iPad

Seems a simple upload file link I have on a website is grayed out and not working/allowing user to click it to upload a file on the iPad.

开发者_如何学JAVA

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File upload support is limited on iOS. Safari isn't allowed to access files in other applications, but since iOS 6 it has allowed image uploads either from the camera roll or directly from the camera.

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The iPad is a different thing that a regular notebook or a PC. Thanks to Apple sand boxing of apps for security reasons. Unless you jail break it, you will not, and can not, access the file system.