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HTML <input> form Attribute

HTML input Tag Reference HTML <input> tag

Example

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

<form action="demo_form.asp" id="form1">
  First name: <input type="text" name="fname"><br>
  <input type="submit" value="Submit">
</form>

Last name: <input type="text" name="lname" form="form1">

Try it yourself »

Definition and Usage

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


Browser Support

The numbers in the table specify the first browser version that fully supports the attribute.

Attribute
form 9.0 Not supported 4.0 5.1 10.6


Differences Between HTML 4.01 and HTML5

The form attribute is new in HTML5.


Syntax

<input form="form_id">

Attribute Values

Value Description
form_id Specifies the form element the <input> element belongs to. The value of this attribute must be the id attribute of a <form> element in the same document.


HTML input Tag Reference HTML <input> tag

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