File Reader API not working as expected in Safari, but working fine in chrome

Question

I am using safari version 8.0.5. While uploading the file, file.onload is working fine.

On continuous process, if i open the file, do some changes and click on upload file button again, the file is not read in safari but works fine with chrome.

The console.log error i see is File not found.

hope i defined the problem.

EDIT-1

I think i confused with my text

readFile = new FileReader();

readFile.onload = function(){
// working fine on first hit. But not working if i do changes in my file using editor.
}

readFile.error = function(){
// this is called after i make changes in my file with notepad. The error says file not found.
}

Answer 1

Does Safari 8 supports FileReader and File constructors ?

caniuse.com says it doesnt support File