Upload File Using Pure JavaScript

Dears I'm a ASP.NET Developer , i search for a way that i can upload files using Javascript pure with asp.net web forms and i found it so poor ,i don't need it in jquery / i have searched for things for my purpose and i found methods that can help but i don't know how to fit it to my purpose knowing that i don't need any post backs [Methods like ] sendAsBinary its in XMLHTTPREQUEST OBJECT Supported by firefox and getAsBinaryData and its a method in the file DOM Element Object also supported only by firefox , i wish that some o开发者_运维问答ne can help me find a way to do the upload with pure javascript

Thanx

Something like what you're trying to do is only possible with the HTML5 file api(which allows reading files). I've never had to do something like this before, but I suggest:

//file is ready for sending
var file = fileInput.files[0];
var fReader = new FileReader();

fReader.onloadend = function(){
  var xhr = new XMLHttpRequest();
  //processing and send 
  this.result;
};

fReader.readAsDataURL(file);