HTML <button> formmethod Attribute
HTML <button> tag
A form with two submit buttons.The first submit button submits the form data
with method="get", and the second submits the form data with method="post":
<form action="demo_form.asp" method="get">
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First name: <input type="text" name="fname"><br>
Last name: <input type="text" name="lname"><br>
<button type="submit" formmethod="post"
The formmethod attribute is supported in Internet Explorer 10, Firefox, Opera, Chrome, and Safari.
Note: Internet Explorer 9 and earlier versions, do not support the formmethod attribute.
Definition and Usage
The formmethod attribute specifies which HTTP method to use when sending the
form-data. This attribute overrides the form's method attribute.
The formmethod attribute is only used for buttons with type="submit".
The form-data can be sent as URL variables (with method="get") or as HTTP
post (with method="post").
Notes on the "get" method:
- it appends the form-data to the URL in name/value pairs
- it is useful for form submissions where a user want to bookmark the result
- There is a limit to how much data you can place in a URL (varies between
browsers), therefore, you cannot be sure that all of the form-data will be
- Never use the "get" method to pass sensitive information! (password or
other sensitive information will be visible in the browser's address bar)
Notes on the "post" method:
- it sends the form-data as an HTTP post transaction
- Form submissions with the "post" method cannot be bookmarked
- it is more robust and secure than "get"
- it does not have size limitations
Differences Between HTML 4.01 and HTML5
The formmethod attribute is new in HTML5.
<button type="submit" formmethod="get|post">
||Appends the form-data to the URL: URL?name=value&name=value
||Sends the form-data as an HTTP post transaction
HTML <button> tag
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