HTML 5.0 - Form Attributes
This chapter covers some of the new attributes for <form> and <input>.
New form attributes:
New input attributes:
autocomplete
autofocus
form
form overrides (formaction, formenctype, formmethod, formnovalidate, formtarget)
height and width
list
min, max and step
multiple
pattern (regexp)
placeholder
required
Attribute IE Firefox Opera Chrome Safari
autocomplete 8.0 3.5 9.5 3.0 4.0
autofocus No No 10.0 3.0 4.0
form No No 9.5 No No
form overrides No No 10.5 No No
height and width 8.0 3.5 9.5 3.0 4.0
list No No 9.5 No No
min, max and step No No 9.5 3.0 No
multiple No 3.5 No 3.0 4.0
No validateNo No No No No
pattern No No 9.5 3.0 No
placeholder No No No 3.0 3.0
required No No 9.5 3.0 No
The autocomplete attribute specifies that the form or input field should have an autocomplete function.
Note: The autocomplete attribute works with <form>, and the following <input> types: text, search, url, telephone, email, password, datepickers, range, and color.
When the user starts to type in an autocomplete field, the browser should display options to fill in the field:
<form action="demo_form.asp" method="get" autocomplete="on">
Note: In some browsers you may need to activate the autocomplete function for this to work.
The autofocus attribute specifies that a field should automatically get focus when a page is loaded.
Note: The autofocus attribute works with all <input> types.
User name: <input type="text" name="user_name" autofocus="autofocus" />
The form attribute specifies one or more forms the input field belongs to.
Note: The form attribute works with all
types.
The form attribute must refer to the id of the form it belongs to:
<form action="demo_form.asp" method="get" id="user_form">
Note: To refer to more than one form, use a space-separated list.
The form override attributes allow you to override some of the attributes set for the form element.
The form override attributes are:
formaction - Overrides the form action attribute
formenctype - Overrides the form enctype attribute
formmethod - Overrides the form method attribute
formnovalidate - Overrides the form novalidate attribute
formtarget - Overrides the form target attribute
Note: The form override attributes works with the following <input> types: submit and image.
<form action="demo_form.asp" method="get" id="user_form">
E-mail: <input type="email" name="userid" />
Note: These attributes are helpful for creating different submit buttons.
The height and width attributes specifies the height and width of the image used for the input type image.
Note: The height and width attributes only works with
type: image.
<input type="image" src="img_submit.gif" width="24" height="24" />
The list attribute specifies a datalist for an input field. A datalist is a list of options for an input field.
Note: The list attribute works with the following
types: text, search, url, telephone, email, date pickers, number, range, and color.
Webpage: <input type="url" list="url_list" name="link" />
The min, max and step attributes are used to specify restrictions for input types containing numbers or dates.
The max attribute specifies the maximum value allowed for the input field.
The min attribute specifies the minimum value allowed for the input field.
The step attribute specifies the legal number intervals for the input field (if step="3", legal numbers could be -3,0,3,6, etc).
Note: The min, max, and step attributes works with the following <input> types: date pickers, number, and range.
The example below shows a numeric field that accepts values between 0 and 10, with a step of 3 (legal numbers are 0, 3, 6 and 9):
Points: <input type="number" name="points" min="0" max="10" step="3" />
The multiple attribute specifies that multiple values can be selected for an input field.
Note: The multiple attribute works with the following <input> types: email, and file.
Select images: <input type="file" name="img" multiple="multiple" />
The novalidate attribute specifies that the form or input field should not be validated when submitted.
Note: The novalidate attribute works with: <form> and the following <input> types: text, search, url, telephone, email, password, date pickers, range, and color.
<form action="demo_form.asp" method="get" novalidate="true">
The pattern attribute specifies a pattern used to validate an input field.
The pattern is a regular expression. You can read about this in our
JavaScript tutorial .
Note: The pattern attribute works with the following <input> types: text, search, url, telephone, email, and password
The example below shows a text field that can only contain three letters (no numbers or special characters):
Country code: <input type="text" name="country_code" pattern="[A-z]{3}" title="Three letter country code" />
The placeholder attribute provides a hint that describes the expected value of an input field.
Note: The placeholder attribute works with the following <input> types: text, search, url, telephone, email, and password
The hint is displayed in the input field when it is empty, and disappears when the field gets focus:
<input type="search" name="user_search" placeholder="Search Leakbali.com" />
The required attribute specifies that an input field must be filled out before submitting.
Note: The required attribute works with the following <input> types: text, search, url, telephone, email, password, date pickers, number, checkbox, radio, and file.
Name: <input type="text" name="usr_name" required="required" />
