HTML Hidden Fields

When we set a hidden input field in the form using the<input> tag and set the type attribute to "hidden".we discussed in the HTML Input and HTML Textfields tutorials.
Example:

<form name="HTML Form" action="mailto:youremail@email.com" method="post">
First: <input title="Enter Your First Name" id="first" name="first" type="text" size="12" maxlength="12" /> Last: <input title="Enter Your Last Name" id="last" name="last" type="text" size="16" maxlength="25" /><br />
Password: <input type="password" title="Enter Your Password" size="10" maxlength="9" /><br /><br />
<input type="hidden" name="orderNumber" id="orderNumber" value="0234" /><br />
<input type="submit" value="SUBMIT" />
<input type="reset" value="RESET" />
</form>

Your Result:

First:  Last: 
Password: