HTML5 Form Attributes

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http://www.w3schools.com/html/html5_form_attributes.asp

HTML5 New Form Attributes

HTML5 has several new attributes for <form> and <input>.

New attributes for <form>:

autocomplete
novalidate

New attributes for <input>:

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

<form> / <input> 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 <form> and the following <input> types: text, search, url, tel, email, password, datepickers, range, and color.

An HTML form with autocomplete on (and off for one input field):

<!DOCTYPE html><html><body><form action="demo_form.asp" autocomplete="on">  First name:<input type="text" name="fname"><br>  Last name: <input type="text" name="lname"><br>  E-mail: <input type="email" name="email" autocomplete="off"><br>  <input type="submit"></form><p>Fill in and submit the form, then reload the page to see how autocomplete works.</p><p>Notice that autocomplete is "on" for the form, but "off" for the e-mail field.</p></body></html>

Fill in and submit the form, then reload the page to see how autocomplete works.

Notice that autocomplete is "on" for the form, but "off" for the e-mail field.

Tip: In some browsers you may need to activate the autocomplete function for this to work.

<form> novalidate Attribute

The novalidate attribute is a boolean attribute.

When present, it specifies that the form-data (input) should not be validated when submitted.

Indicates that the form is not to be validated on submit:

<!DOCTYPE html><html><body><form action="demo_form.asp" novalidate>E-mail: <input type="email" name="user_email"><input type="submit"></form><p><strong>Note:</strong> The novalidate attribute of the form tag is not supported in Internet Explorer 9 and earlier versions, or in Safari.</p></body></html>

Note: The novalidate attribute of the form tag is not supported in Internet Explorer 9 and earlier versions, or in Safari.

<input> autofocus Attribute

The autofocus attribute is a boolean attribute.

When present, it specifies that an <input> element should automatically get focus when the page loads.

Let the "First name" input field automatically get focus when the page loads:

<!DOCTYPE html><html><body><form action="demo_form.asp">  First name:<input type="text" name="fname" autofocus><br>  Last name: <input type="text" name="lname"><br>  <input type="submit"></form><p><strong>Note:</strong> The autofocus attribute of the input tag is not supported in Internet Explorer 9 and earlier versions.</p></body></html>

Note: The autofocus attribute of the input tag is not supported in Internet Explorer 9 and earlier versions.

<input> form Attribute

The form attribute specifies one or more forms an <input> element belongs to.

Tip: To refer to more than one form, use a space-separated list of form ids.

An input field located outside the HTML form (but still a part of the form):

<!DOCTYPE html><html><body><form action="demo_form.asp" id="form1">First name: <input type="text" name="fname"><br><input type="submit" value="Submit"></form><p>The "Last name" field below is outside the form element, but still part of the form.</p>Last name: <input type="text" name="lname" form="form1"></body></html>

The "Last name" field below is outside the form element, but still part of the form.

Last name:

<input> 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 <form> element.

Note: The formaction attribute is used with type="submit" and type="image".

An HTML form with two submit buttons, with different actions:

<!DOCTYPE html><html><body><form action="demo_form.asp">  First name: <input type="text" name="fname"><br>  Last name: <input type="text" name="lname"><br>  <input type="submit" value="Submit"><br>  <input type="submit" formaction="demo_admin.asp" value="Submit as admin"></form><p><strong>Note:</strong> The formaction attribute of the input tag is not supported in Internet Explorer 9 and earlier versions.</p></body></html>

Note: The formaction attribute of the input tag is not supported in Internet Explorer 9 and earlier versions.

<input> 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 <form> element.

Note: The formenctype attribute is used with type="submit" and type="image".

Send form-data that is default encoded (the first submit button), and encoded as "multipart/form-data" (the second submit button):

<!DOCTYPE html><html><body><form action="demo_post_enctype.asp" method="post">  First name: <input type="text" name="fname"><br>  <input type="submit" value="Submit">  <input type="submit" formenctype="multipart/form-data" value="Submit as Multipart/form-data"></form><p><strong>Note:</strong> The formenctype attribute of the input tag is not supported in Internet Explorer 9 and earlier versions.</p></body></html>

Note: The formenctype attribute of the input tag is not supported in Internet Explorer 9 and earlier versions.

<input> 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 <form> element.

Note: The formmethod attribute can be used with type="submit" and type="image"

The second submit button overrides the HTTP method of the form:

<!DOCTYPE html><html><body><form action="demo_form.asp" method="get">  First name: <input type="text" name="fname"><br>  Last name: <input type="text" name="lname"><br>  <input type="submit" value="Submit">  <input type="submit" formmethod="post" formaction="demo_post.asp" value="Submit using POST"></form><p><strong>Note:</strong> The formmethod attribute of the input tag is not supported in Internet Explorer 9 and earlier versions.</p></body></html>

Note: The formmethod attribute of the input tag is not supported in Internet Explorer 9 and earlier versions.

<input> formnovalidate Attribute

The novalidate attribute is a boolean attribute.

When present, it specifies that the <input> element should not be validated when submitted.

The formnovalidate attribute overrides the novalidate attribute of the <form> element.

Note: The formnovalidate attribute can be used with type="submit".

A form with two submit buttons (with and without validation):

<!DOCTYPE html><html><body><form action="demo_form.asp">  E-mail: <input type="email" name="userid"><br>  <input type="submit" value="Submit"><br>  <input type="submit" formnovalidate value="Submit without validation"></form><p><strong>Note:</strong> The formnovalidate attribute of the input tag is not supported in Internet Explorer 9 and earlier versions, or in Safari.</p></body></html>

Note: The formnovalidate attribute of the input tag is not supported in Internet Explorer 9 and earlier versions, or in Safari.

<input> 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 <form> element.

Note: The formtarget attribute can be used with type="submit" and type="image".

A form with two submit buttons, with different target windows:

<!DOCTYPE html><html><body><form action="demo_form.asp">  First name: <input type="text" name="fname"><br>  Last name: <input type="text" name="lname"><br>  <input type="submit" value="Submit as normal">  <input type="submit" formtarget="_blank" value="Submit to a new window/tab"></form><p><strong>Note:</strong> The formtarget attribute of the input tag is not supported in Internet Explorer 9 and earlier versions.</p></body></html>

Note: The formtarget attribute of the input tag is not supported in Internet Explorer 9 and earlier versions.

<input> height and width Attributes

The height and width attributes specify the height and width of an <input> element.

Note: The height and width attributes are only used with <input type="image">.

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:

<!DOCTYPE html><html><body><form action="demo_form.asp">  First name: <input type="text" name="fname"><br>  Last name: <input type="text" name="lname"><br>  <input type="image" src="img_submit.gif" alt="Submit" width="48" height="48"></form><p><b>Note:</b> The input type="image" sends the X and Y coordinates of the click that activated the image button.</p></body></html>

Note: The input type="image" sends the X and Y coordinates of the click that activated the image button.

<input> list Attribute

The list attribute refers to a <datalist> element that contains pre-defined options for an <input> element.

Example

An <input> element with pre-defined values in a <datalist>:

<!DOCTYPE html><html><body><form action="demo_form.asp" method="get"><input list="browsers" name="browser"><datalist id="browsers">  <option value="Internet Explorer">  <option value="Firefox">  <option value="Chrome">  <option value="Opera">  <option value="Safari"></datalist><input type="submit"></form><p><b>Note:</b> The datalist tag is not supported in Internet Explorer 9 and earlier versions, or in Safari.</p></body></html>

Note: The datalist tag is not supported in Internet Explorer 9 and earlier versions, or in Safari.

<input> min and max Attributes

The min and max attributes specify the minimum and maximum value for an <input> element.

Note: The min and max attributes works with the following input types: number, range, date, datetime, datetime-local, month, time and week.

Example

<input> elements with min and max values:

<!DOCTYPE html><html><body><form action="demo_form.asp">  Enter a date before 1980-01-01:  <input type="date" name="bday" max="1979-12-31"><br>  Enter a date after 2000-01-01:  <input type="date" name="bday" min="2000-01-02"><br>  Quantity (between 1 and 5):  <input type="number" name="quantity" min="1" max="5"><br>  <input type="submit">  </form><p><strong>Note:</strong> The max and min attributes of the input tag is not supported in Internet Explorer 9 and earlier versions, or in Firefox.</p><p><strong>Note:</strong> The max and min attributes will not work for dates and time in Internet Explorer 10, since IE 10 does not support these input types.</p></body></html>

Note: The max and min attributes of the input tag is not supported in Internet Explorer 9 and earlier versions, or in Firefox.

Note: The max and min attributes will not work for dates and time in Internet Explorer 10, since IE 10 does not support these input types.

<input> 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 <input> element.

Note: The multiple attribute works with the following input types: email, and file.

Example

A file upload field that accepts multiple values:

<!DOCTYPE html><html><body><form action="demo_form.asp">  Select images: <input type="file" name="img" multiple>  <input type="submit"></form><p>Try selecting more than one file when browsing for files.</p><p><strong>Note:</strong> The multiple attribute of the input tag is not supported in Internet Explorer 9 and earlier versions.</p></body></html>

Try selecting more than one file when browsing for files.

Note: The multiple attribute of the input tag is not supported in Internet Explorer 9 and earlier versions.

<input> pattern Attribute

The pattern attribute specifies a regular expression that the <input> 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):

<!DOCTYPE html><html><body><form action="demo_form.asp">  Country code: <input type="text" name="country_code" pattern="[A-Za-z]{3}" title="Three letter country code">  <input type="submit"></form><p><strong>Note:</strong> The pattern attribute of the input tag is not supported in Internet Explorer 9 and earlier versions, or in Safari.</p></body></html>

Note: The pattern attribute of the input tag is not supported in Internet Explorer 9 and earlier versions, or in Safari.

<input> 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:

<!DOCTYPE html><html><body><form action="demo_form.asp">  <input type="text" name="fname" placeholder="First name"><br>  <input type="text" name="lname" placeholder="Last name"><br>  <input type="submit" value="Submit"></form><p><strong>Note:</strong> The placeholder attribute of the input tag is not supported in Internet Explorer 9 and earlier versions.</p></body></html>

Note: The placeholder attribute of the input tag is not supported in Internet Explorer 9 and earlier versions.

<input> 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:

<!DOCTYPE html><html><body><form action="demo_form.asp">  Username: <input type="text" name="usrname" required>  <input type="submit"></form><p><strong>Note:</strong> The required attribute of the input tag is not supported in Internet Explorer 9 and earlier versions, or in Safari.</p></body></html>

Note: The required attribute of the input tag is not supported in Internet Explorer 9 and earlier versions, or in Safari.

<input> step Attribute

The step attribute specifies the legal number intervals for an <input> 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:

<!DOCTYPE html><html><body><form action="demo_form.asp">  <input type="number" name="points" step="3">  <input type="submit"></form><p><strong>Note:</strong> The step attribute of the input tag is not supported in Internet Explorer 9 and earlier versions, or in Firefox.</p></body></html>

Note: The step attribute of the input tag is not supported in Internet Explorer 9 and earlier versions, or in Firefox.

HTML5 <input> Tag

TagDescription<form>Defines an HTML form for user input<input>Defines an input control

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