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XHTML 1.0 Tutorials - Understanding Forms and Input Fields
By: FYICenter.com
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What Are the Values Submitted on Checkbox Fields?
A "checkbox" input field does not allow viewers to enter any input values directly.
If a form is submitted, "checkbox" input fields will be submitted with values based
on the following rules:
- If a "checkbox" is not checked, no value will be submitted for this checkbox.
- If a "checkbox" is checked and no value specified in the "value" attribute,
"on" will be submitted as the value.
- If a "checkbox" is checked and a value specified in the "value" attribute,
the specified value will be submitted as the value.
If you use the previous tutorial example, you can test the following cases:
1. If you check all the checkboxes and click the submit button, you will get
the following values submitted:
http://localhost/submit?check1=on&check2=css&check3=php
2. If you check only the first and third checkboxes and click the submit button,
you will get the following values submitted:
http://localhost/submit?check1=on&check3=php
3. If you check only the third checkboxes and click the submit button,
you will get the following values submitted:
http://localhost/submit?check3=php
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