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Is there any way of reading the contents of a HTML Canvas as binary data?  At the moment I've got the following HTML to show an input file and the canvas below it:  <p><button id="myButton" type="button">Get Image Co...

var profileImage = fileInputInByteArray;  $.ajax({   url: 'abc.com/',   type: 'POST',   dataType: 'json',   data: {      // Other data      ProfileImage: profileimage      // Other data   },   success: {   } })  // Code in...

I need to add a UTF-8 byte-order-mark to generated text data on client side. How do I do that?  Using new Blob(['\xEF\xBB\xBF' + content]) yields '"my data"',  of course.  Neither did '\uBBEF\x22BF' work (with...

I have two base64 encoded in PNG, and I need to compare them using Resemble.JS  I think that the best way to do it is to convert the PNG's into file objects using fileReader. How can I do it?...

I'm trying to upload large files (at least 500MB, preferably up to a few GB) using the WebSocket API. The problem is that I can't figure out how to write "send this slice of the file, release the resources used then repeat". I was hop...

I am working on an web site which will be packed in an .exe file. So the site will only be used offline. Now i need to parse an local xml document. How can i get the file handle to a local file using html5 file api?  EDIT: I dont want to use <inpu...

I would like to generate a text file in the javascript dynamicly, then offer this for download. Currently I can get this working to a degree with either of the following solutions:  content = "abc123"; document.location = "data:text/octet...

We are currently looking at porting a enterprise silverlight application over to html5. The major roadblock that we have hit is the ability to open files from the user's local disk. Currently they have a document library which just links to files...

I barely made websocket file upload function. But uploading speed seems to be slow. I have used Java API for websocket Server and javascript for client.  Server:  package websocket;  import java.io.File; import java.io.FileNotFoundException; import j...