Home arrow HTML arrow Submitting a Form Using an Image Tag

Submitting a Form Using an Image Tag

There are a number of ways to make the forms on your website more user friendly. This article will explain one way of doing this, which eliminates a page reload and replaces it with an image generated on the server.

Author Info:
By: Chris Root
Rating: 5 stars5 stars5 stars5 stars5 stars / 25
April 18, 2005
  1. · Submitting a Form Using an Image Tag
  2. · Submitting a Form
  3. · Processing the Form
  4. · The Server Side Code
  5. · GD Methods
  6. · Handling the Name
  7. · The TextBox Class
  8. · From the Top

print this article

Submitting a Form Using an Image Tag
(Page 1 of 8 )

Forms on the Web are somewhat user unfriendly. One of the worst parts of using a form on a website is page reloads. Many times, after submitting a form, you are taken to a confirmation page, which provides links to go somewhere else rather then allowing you to submit the information and get on with your life.

This article will demonstrate a way to eliminate a step by getting rid of the confirmation page and replacing it with a simple image generated by the server. There are no page loads; just a little Javascript, server side code and an HTML "img" tag.

Image Generation

There are many server side Web application platforms that provide a way to generate graphics "on the fly" either built into the application language or via some sort of extension.

Most of these systems work with HTML in a very simple manner. Rather than using a path to an image in the src attribute of an image tag, the path to a coded page is used. This coded page (such as a PHP or ASP page) generates the graphics, assembles the proper HTTP headers and then sends the response as an image rather than an HTML document.

<img src="img_generate.php">

Many times this is used to display bar graphs, pie charts or other graphics assembled using information in a database.

Since we are sending the request to a Web application, there is nothing that says that we can't send more than just the path to the application.

In a standard GET style HTTP request (like a page request), a query string is used to send additional information to the server. A query string is made up of a "?" character followed by one or more name/value pairs separated by an "&", and encoded to escape characters such as spaces that are not allowed in URLs.


A query string can be appended to any URL. As long as the target of the request is able to process and use the query string, then we have something useful. A static image of course has no use for query strings; a Web application can do quite a lot with one, however.

blog comments powered by Disqus

- Does HTML5 Need a Main Element?
- Revisiting the HTML5 vs. Native Debate
- HTML5: Not for Phone Apps?
- HTML5 or Native?
- Job Hunting? Freelancer.com Lists This Quart...
- HTML5 in the News
- Report: HTML5 Mobile Performance Lags
- The Top HTML5 Audio Players
- Top HTML5 Video Tutorials
- HTML5: Reasons to Learn and Use It
- More of the Top Tutorials for HTML5 Forms
- MobileAppWizard Releases HTML5 App Builder
- HTML5 Boilerplate: Working with jQuery and M...
- HTML5 Boilerplate Introduction
- New API Platform for HTML5

Watch our Tech Videos 
Dev Articles Forums 
 RSS  Articles
 RSS  Forums
 RSS  All Feeds
Write For Us 
Weekly Newsletter
Developer Updates  
Free Website Content 
Contact Us 
Site Map 
Privacy Policy 

Developer Shed Affiliates


© 2003-2019 by Developer Shed. All rights reserved. DS Cluster - Follow our Sitemap
Popular Web Development Topics
All Web Development Tutorials