new earth online

Today, thanks to an article I read via dzone I found that the button tag is treated differently in IE to other browsers when given a name tag so it can be read via the POST or GET result. In IE (both in 7 and older versions) the value of the variable will be the innerHTML of the button, but in Firefox (and Opera, etc.) the value is the what's assigned to the value tag. Yet another thing for Microsoft to fix.

IE5.5/Win

Submits value from innerHTML

IE6/Win

Submits value from innerHTML

Firefox/Win

Submits value from tag

Firefox/Mac

Submits value from tag

IE/Mac

Doesn't submit any value - button tags do not get included in form submission even when they have a name attribute

Opera

Submits value from tag

Safari

Submits value from tag

To see for yourselves, try this:

<?php
   print_r($_POST);
?>
<form action="<?php print $_SERVER['PHP_SELF']; ?>"
      method="post">
   <input type="text" name="testfield" value="" />
   <button name="testbutton" type="submit"
      value="Value Attribute">Inner HTML value</button>
</form>

Source: Random Thoughts