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Is Firefox the only that supports the sendAsBinary method?
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All modern browsers (Chrome, Firefox, Edge (and IE7+), Safari, Opera) have a built-in XMLHttpRequest object.
1. Open Chrome browser 2. Go to chrome://flags/#allow-sync-xhr-in-page-dismissal 3. Change the drop-down selection from “Default” or “Disabled” to “Enabled”.
The Fetch API is a modern alternative to XMLHttpRequest . The generic Headers, Request, and Response interfaces provide consistency while Promises permit easier chaining and async/await without callbacks.
Note: XMLHttpRequest advanced features is Partially Supported on Internet Explorer 11.
At the moment, I believe only FF3+ supports this, though there is a workaround for Chrome.
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The links around http://code.google.com/p/chromium/issues/detail?id=35705 are very confusing, but I do not think there is any workaround on Chrome 8 for POST'ing binary data.
You can convert the data to base64 and upload that, but then the server has to be able to decode it.
Chrome 9 (currently in Dev channel, not even Beta yet) lets you do XmlHttpRequest.send(blob) where the blob's bytes are sent as-is (not converted to utf-8), so the non-standard XmlHttpRequest.sendAsBinary() is not necessary for binary file uploads.
You must create this blob from the "binary" string that is in evt.target.result after a successful FileReader.readAsBinaryString(). That requires using ArrayBuffer and Uint8Array, which are not available in Chrome 8.
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