HTML - Hidden Field

Hidden fields allow a coder to pass values to form elements in a subtle manner. An experienced web developer will utilize these fields to pass temporary, or session-based data, from one form to another or to store information that has already been entered in by the user.

Place a hidden input field into your web forms using the <input> tag and set the type attribute to "hidden". This field can be customized using any of the attributes discussed in the HTML Input and HTML Text Fields lessons.

First: <input title="Please Enter Your First Name" id="first"
 name="first" type="text" size="12" maxlength="12" /> 

Last: <input title="Please Enter Your Last Name" id="last"
 name="last" type="text" size="18" maxlength="24" /><br />

Password: <input type="password" title="Please Enter Your Password" size="8" maxlength="8" /><br /><br />

<input type="hidden" name="orderNumber" id="orderNumber" value="0024" /><br />

<input type="submit" value="SUBMIT" />

<input type="reset" value="RESET" />

It is important to note that HTML hidden fields do not offer any data security. Like all HTML form elements, the data is processed in plain text and is readily accessible by any novice hacker.