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In my Javascript code, I'm trying to check on the blob URL created by an uploaded image: alert(window.webkitURL.createObjectURL(files[0]));

In Safari, with this line, I get the error: TypeError: 'undefined' is not an object (evaluating 'window.webkitURL.createObjectURL')

To be sure, the files[0] is being referenced correctly. When I do: alert(files[0]);

Safari tells me: [object File]

So I know I have a file object being correctly referenced to - what should be - a correct WebKit URL referencing function.

Any ideas?

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2 Answers 2

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webkitURL belongs to the File/Blob API, which is not yet supported in Safari (5.1.2) or mobile Safari (iOS 5.01).

ArrayBuffers are available in recent Safaris.

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I suspect you're focussing on the wrong element of that line. I'd double-check that both window.webkitURL and window.webkitURL.createObjectURL really exist.

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window.webkitURL is undefined in Safari (works in Chrome, however). Any ideas why?
Well, it's not a standard, so I wouldn't expect it to exist anywhere but in the browser that defines it (Chrome). You might try the earlier names that Chrome had for it, window.createBlobURL and window.createObjectURL, but I wouldn't put odds on it. Good luck,

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