XHTML Reference
Forms
Defining a Form
Each form definition must be enclosed within <form action=""> </form> tags.
A form can be divided into sections using the <fieldset> </fieldset> tags. If broken into sections then each section should have a title contained within <legend> </legend> tags.
The following optional attributes can be specified on a <form> tag:
- accept
- accept-charset
- enctype
- method
- name
- core
- international
- event
The following attributes are deprecated but can still be used with the transitional DOCTYPE
- target
A <form> tag may not be nested within another <form> tag.
The following optional attributes can be specified on a <fieldset> tag:
The following optional attributes can be specified on a <legend> tag:
- accesskey
- core
- international
- event
The following attributes are deprecated but can still be used with the transitional DOCTYPE
- legend
Input Fields
The <label> </label> identify text associated with a form field as being a label for that field.
The following optional attributes can be specified on a <label> tag:
- accesskey
- for
- core
- international
- event
A <label> tag may not be nested within another <label> tag.
Most input fields are defined using the <input /> tag. One exception is the text box (which allows multiple lines of text to be input). This is defined using <textarea rows="" cols=""> </textarea> tags
The following optional attributes can be specified on a <input> tag:
- accept
- accesskey
- checked="checked"
- disabled="disabled"
- maxlength
- name
- readonly="readonly"
- size
- src
- tabindex
- type
- usemap
- value
- core
- international
- event
- onfocus
- onblur
- onselect
- onchange
The following attributes are deprecated but can still be used with the transitional DOCTYPE
- align
The following optional attributes can be specified on the <textarea> tag:
- access
- disabled="disabled"
- name
- readonly="readonly"
- tabindex
- core
- international
- event
- onfocus
- onblur
- onchange
- onselect
Buttons and Selection Lists
Push buttons can now be defined using <button> </button> tags.
The following optional attributes can be specified on the <button> tag:
- accesskey
- disabled="disabled"
- name
- tabindex
- type
- value
- core
- international
- event
- onblur
- onfocus
A <button> tag may not be have another <button> tag, <a> tag, <input> tag, <select> tag, <textarea> tag, <label> tag, <form> tag, or <fieldset> tag nested within it.
Selection lists can be created using the <select> </select> tags. Each entry within the selection list needs to be defined within <option> </option> tags.
The following optional attributes can be specified on the <select> tag:
- disabled="disabled"
- multiple="multiple"
- name
- size
- tabindex
- core
- international
- event
- onfocus
- onblur
- onchange
The following optional attributes can be specified on the <option> tag:
- disabled="disabled"
- label
- selected="selected"
- value
- core
- international
- event
It is now possible to group items within a selection list using <optgroup label="" > </optgroup> tags.
The following optional attributes can be specified on the <optgroup> tag:
- disabled="disabled"
- core
- international
- event
