title: How to get a file from local disk then pass that to a POST method to upload to server
body: <p>I have an input tag of type <code>file</code>. I use this to get a file from my local disc. What I need is a way to get and hold that file so I can POST it to a server. </p>
  
  <pre><code>&lt;input type='file'&gt; 
  
  //I now want to hold this file and pass this to this ajax post method
  
  $.ajax({
    type: "POST",
    url: url, //I have URL, this isn't a problem
    data: data, // do I place response here ? 
    success: function(){ alert('file posted')
    dataType: dataType // ? 
  })
  </code></pre>