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How to get the full path of the upload file by the user,it works in IE but in FireFox 18 it just gives file name instead of fullpath

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I am using Fire Fox 18.0.2,I could not able to get the full path of the file upload but it works in IE,where as in Firefox it just gives only the file name with extension.How to get the full path of the upload file.

I am using Fire Fox 18.0.2,I could not able to get the full path of the file upload but it works in IE,where as in Firefox it just gives only the file name with extension.How to get the full path of the upload file.

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This is a security feature, preventing scripts from accessing the full path of a file to be uploaded using <input type="file">.

In earlier versions of Firefox, your script might have asked the user's permission to access privileged information, but this feature was removed in the past few versions of Firefox.

Why do you need the full path?