HTML & XHTML: The Definitive Guide, 5th Edition

A Simple Form Example

In a moment, we’ll examine each of the many form controls in detail. Let’s first take a quick look at a simple example, to see how forms are put together. This HTML form (shown in Figure 9-1) gathers basic demographic information about a user:

<form method=POST action="http://www.kumquat.com/demo">
  Name: 
    <input type=text name=name size=32 maxlength=80>
  <p>
  Sex: 
    <input type=radio name=sex value="M"> Male 
    <input type=radio name=sex value="F"> Female
  <p>
  Annual Income: 
    <select name=income size=1>
      <option>Under $25,000
      <option>$25,001 to $50,000
      <option>$50,001 and higher
    </select>
  <p>
  <input type=submit>
</form>

Figure 9-1. A simple form

The first line of the example starts the form and indicates we’ll be using the POST method for data transmission to the forms-processing server. The form’s user-input controls follow, each defined by an <input> tag and type attribute. There are three controls in the simple example, each contained within its own paragraph.

The first control is a conventional text-entry field, letting the user type up to 80 characters but displaying only 32 of them at a time. The next one is a multiple-choice option, which lets the user select only one of two radio buttons. This is followed by a pull-down menu for choosing one of three options. The final control is a simple submission button, which, when clicked by the user, sets the form’s processing ...