title: Difference between Ajax upload and Normal upload
body: <p>i have a doubt with the upload system in <code>PHP</code>.</p>
  
  <p>What is the difference between Normal Upload [ without ajax ] and Ajax Upload ?</p>
  
  <p>By using Javascript i can send values to the server ,is it possible in the case of Files ?</p>
  
  <p>Is there any limitation for this ? and i found that so many uploaders are using FLASH for to upload FILES,
  ex:Gmail,uploadify.....</p>
  
  <p>How can i build a basic uploader with JQUERY/javascript ? also i heard that i cant send FILE by a XHR request.</p>
  
  <p>i am using Codeigniter Framework.</p>
  
  <p><code>Expecting Possible duplicate or other refference</code>
  Main Goal Of this Question is to build my own uploader for my current project[neat and clean]</p>