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Uploading a file with JQuery

You can easily submit data in an html form via jQuery's $.post. But you need to do a little more to upload a file. I suggest the jQuery Form Plugin.

Here is the HTML form:
<html>
  <head>
    <title>Title</title>
  </head>
  <body>
    <form action="/test.cgi" enctype="multipart/form-data" method="post">
      <input name="myFile" type="file" />
      <div id="results">
      </div>
    </form>
  </body>
</html>

This is the Javascript file myFrom.js:
$(document).ready(function() { 
  $('form').ajaxForm(
    {
       beforeSubmit: function() {
         $('#results').html('Submitting...');
       },
       success: function(data) {
         var $out = $('#results');
         $out.html('Your results:');
         $out.append('<div><pre>'+ data +'</pre></div>');
        }
    });
})


And here the cgi script "test.cgi" in Ruby
#!/usr/bin/ruby
require 'cgi'

cgi = CGI.new
puts cgi.header
puts "Here is the file you uploaded"

value = cgi['myFile']   # <== value string for 'field_name'
puts value.read                  # <== body of value
puts value.local_path            # <== path to local file of value
puts value.original_filename     # <== original filename of value
puts value.content_type


Make sure that your cgi script has the right permission, 755. Of course you would first manipulate the data instead of just mirroring it.
Labels:

Comments

  1. BartJanuary 7, 2011 at 4:16 PM

    It's not working...
    And why form is after html ?

    ReplyDelete
  2. gumuruhsspjMarch 18, 2011 at 12:14 AM

    hahaha let me try first.... wish it works.
    (^^'a...

    ReplyDelete
  3. gumuruhsspjMarch 18, 2011 at 12:34 AM

    works...!! it workss...!!!!

    I used it in a jsp environment... and it works...!!

    (god bless u, author). :D

    ReplyDelete
  4. VickyJune 16, 2011 at 7:20 PM

    Thanks for this post!!! I had to change some things up to refresh a DIV with an MVC Partial View, but this post definitely pointed me in the right direction! Thanks again!

    ReplyDelete
  5. AnonymousAugust 10, 2011 at 6:42 PM

    I get this error: $("form").ajaxForm is not a function

    please help!!

    ReplyDelete
    Replies
    1. AnonymousMay 17, 2012 at 4:46 AM

      Need include jquery library

      Delete
    2. AnonymousJuly 12, 2012 at 9:20 AM

      Import jquery.js look at jquery.com

      Delete
  6. AnandOctober 20, 2011 at 7:52 PM

    How can we use this in a JSP environment? I need to know this urgently? I mean how can I submit this to a servlet and process the upload? Can someone please help?

    ReplyDelete
  7. Blog nya dillahDecember 28, 2011 at 11:23 PM

    How i get file "myForm.js" ??

    ReplyDelete
  8. Blog nya dillahDecember 28, 2011 at 11:30 PM

    upsss..sorry, i dont read carefully..there's an explanation about file "myForm.js"

    Let me try this code first :)

    ReplyDelete
  9. AvronoJanuary 19, 2012 at 3:51 AM

    Nice, thanks ... not that hard .... do you mean "advice" not "advise" in your title ?

    ReplyDelete
  10. AnonymousFebruary 3, 2012 at 7:08 AM

    Copy - Paste nubs, all of U

    ReplyDelete
  11. AnonymousApril 13, 2012 at 2:57 PM

    ITS NOT WORKING ..

    ANYONE:
    can you teach me how to make a virtual classroom??
    or are there any sites where i can learn.
    i know very basic PHP,javascript.
    This is for my thesis.
    Hope SOMEONE GOOD will HELP.
    URGENT.. ^^,

    ReplyDelete
    Replies
    1. AnonymousAugust 22, 2013 at 12:05 AM

      Can you explain more what's virtual classroom??

      Delete
  12. AnonymousMay 17, 2012 at 4:02 AM

    well, but this is not ajax and in this case jquery is not necesary

    ReplyDelete
  13. fontgradeJune 7, 2012 at 7:12 AM

    it's working fine..for me <3


    thanks

    ReplyDelete
  14. AnonymousJuly 9, 2012 at 11:36 PM

    can you upload your js file which you include in you code

    ReplyDelete
  15. AnonymousJuly 11, 2012 at 1:57 AM

    thanx. work fine also for me

    ReplyDelete
  16. AnonymousAugust 7, 2012 at 4:50 AM

    Brilliant, thanks!

    ReplyDelete
  17. UnknownAugust 24, 2012 at 11:04 AM

    Thanks Bro.... This is exactly what i want.
    Great help.. Thanks

    ReplyDelete
  18. PiyushSeptember 21, 2012 at 9:04 AM

    It is not working on IE-8

    ReplyDelete
  19. UnknownFebruary 7, 2013 at 10:54 PM

    I dont know anything about ruby :((

    ReplyDelete
  20. AnonymousFebruary 13, 2013 at 5:23 AM

    Its working fine..Thanks a lot...

    ReplyDelete
  21. Pasang Iklan Gratis Tanpa DaftarFebruary 26, 2013 at 12:48 PM

    thanks for this tutorial, I like this and I want to practice this tutorial to my project website

    ReplyDelete
  22. Women IssueFebruary 26, 2013 at 12:52 PM

    nice tutorial, and i will wait your next tutorial mo advance

    ReplyDelete
  23. PombearMarch 19, 2013 at 1:33 PM

    Can't you translate the test.cgi to php?
    I don't understand the buy script :/

    ReplyDelete
  24. AnonymousApril 19, 2013 at 10:23 AM

    workssss!!!!!!! only in FF -.-''

    ReplyDelete
  25. AnonymousJuly 4, 2013 at 5:59 AM

    Thanks for this post!!!
    It works!
    Im using rails 3

    ReplyDelete

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