Notes

HTML5 New Form Attributes
HTML5 has several new attributes for
and
.
New attributes for
:
autocomplete
novalidate
New attributes for :

autocomplete
autofocus
form
formaction
formenctype
formmethod
formnovalidate
formtarget
height and width
list
min and max
multiple
pattern (regexp)
placeholder
required
step


/
autocomplete Attribute
The autocomplete attribute specifies whether a form or input field should have autocomplete on or off.
When autocomplete is on, the browser automatically complete values based on values that the user has entered before.
Tip:
It is possible to have autocomplete "on" for the form, and "off" for specific input fields, or vice versa.
Note:
The autocomplete attribute works with
and the following
types: text, search, url, tel, email, password, datepickers, range, and color.
Example
An HTML form with autocomplete on (and off for one input field):
First name:
Last name:
E-mail:

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Tip:
In some browsers you may need to activate the autocomplete function for this to work.
novalidate Attribute
The novalidate attribute is a boolean attribute.
When present, it specifies that the form-data (input) should not be validated when submitted.
Example
Indicates that the form is not to be validated on submit:
E-mail:

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autofocus Attribute
The autofocus attribute is a boolean attribute.
When present, it specifies that an
element should automatically get focus when the page loads.
Example
Let the "First name" input field automatically get focus when the page loads:
First name:
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form Attribute
The form attribute specifies one or more forms an
element belongs to.
Tip:
To refer to more than one form, use a space-separated list of form ids.
Example
An input field located outside the HTML form (but still a part of the form):
First name:

Last name:
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formaction Attribute
The formaction attribute specifies the URL of a file that will process the input control when the form is submitted.
The formaction attribute overrides the action attribute of the
element.
Note:
The formaction attribute is used with type="submit" and type="image".
Example
An HTML form with two submit buttons, with different actions:
First name:
Last name:
value="Submit as admin">

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formenctype Attribute
The formenctype attribute specifies how the form-data should be encoded when submitting it to the server (only for forms with method="post")
The formenctype attribute overrides the enctype attribute of the
element.
Note:
The formenctype attribute is used with type="submit" and type="image".
Example
Send form-data that is default encoded (the first submit button), and encoded as "multipart/form-data" (the second submit button):
First name:
value="Submit as Multipart/form-data">

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formmethod Attribute
The formmethod attribute defines the HTTP method for sending form-data to the action URL.
The formmethod attribute overrides the method attribute of the
element.
Note:
The formmethod attribute can be used with type="submit" and type="image".
Example
The second submit button overrides the HTTP method of the form:
First name:
Last name:
value="Submit using POST">

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formnovalidate Attribute
The novalidate attribute is a boolean attribute.
When present, it specifies that the
element should not be validated when submitted.
The formnovalidate attribute overrides the novalidate attribute of the
element.
Note:
The formnovalidate attribute can be used with type="submit".
Example
A form with two submit buttons (with and without validation):
E-mail:

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formtarget Attribute
The formtarget attribute specifies a name or a keyword that indicates where to display the response that is received after submitting the form.
The formtarget attribute overrides the target attribute of the
element.
Note:
The formtarget attribute can be used with type="submit" and type="image".
Example
A form with two submit buttons, with different target windows:
First name:
Last name:
value="Submit to a new window">

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height and width Attributes
The height and width attributes specify the height and width of an
element.
Note:
The height and width attributes are only used with
.
Tip:
Always specify both the height and width attributes for images. If height and width are set, the space required for the image is reserved when the page is loaded. However, without these attributes, the browser does not know the size of the image, and cannot reserve the appropriate space to it. The effect will be that the page layout will change during loading (while the images load).
Example
Define an image as the submit button, with height and width attributes:

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list Attribute
The list attribute refers to a
element that contains pre-defined options for an
element.
Example
An
element with pre-defined values in a
:


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min and max Attributes
The min and max attributes specify the minimum and maximum value for an
element. The
TYPE MUST BE NUMBER NOT TEXT
Note:
The min and max attributes works with the following input types: number, range, date, datetime, datetime-local, month, time and week.
Example
elements with min and max values:
Enter a date before 1980-01-01:
Enter a date after 2000-01-01:
Quantity (between 1 and 5):
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multiple Attribute
The multiple attribute is a boolean attribute.
When present, it specifies that the user is allowed to enter more than one value in the
element.
Note:
The multiple attribute works with the following input types: email, and file.
Example
A file upload field that accepts multiple values:
Select images:
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pattern Attribute
The pattern attribute specifies a regular expression that the
element's value is checked against.
Note:
The pattern attribute works with the following input types: text, search, url, tel, email, and password.
Tip:
Use the global
title
attribute to describe the pattern to help the user.
Tip:
Learn more about
regular expressions
in our JavaScript tutorial.
Example
An input field that can contain only three letters (no numbers or special characters):
Country code:
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placeholder Attribute
The placeholder attribute specifies a short hint that describes the expected value of an input field (e.g. a sample value or a short description of the expected format).
The short hint is displayed in the input field before the user enters a value.
Note:
The placeholder attribute works with the following input types: text, search, url, tel, email, and password.
Example
An input field with a placeholder text:

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required Attribute
The required attribute is a boolean attribute.
When present, it specifies that an input field must be filled out before submitting the form.
Note:
The required attribute works with the following input types: text, search, url, tel, email, password, date pickers, number, checkbox, radio, and file.
Example
A required input field:
Username:
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step Attribute
The step attribute specifies the legal number intervals for an
element.
Example: if step="3", legal numbers could be -3, 0, 3, 6, etc.
Tip:
The step attribute can be used together with the max and min attributes to create a range of legal values.
Note:
The step attribute works with the following input types: number, range, date, datetime, datetime-local, month, time and week.
Example
An input field with a specified legal number intervals:

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HTML5
Tag
Tag
Description
Defines an HTML form for user input
Defines an input control