HTML <input> formmethod Attribute
The second submit button overrides the HTTP method of the form:
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">
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The formmethod attribute is supported in Internet Explorer 10, Firefox, Opera, Chrome, and Safari.
Note: The formmethod attribute of the <input> tag is not supported in Internet Explorer 9 and earlier versions.
Definition and Usage
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 form-data can be sent as URL variables (method="get") or as an HTTP post transaction (method="post").
Notes on the "get" method:
- This method appends the form-data to the URL in name/value pairs
- This method 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 correctly transferred
- 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:
- This method sends the form-data as an HTTP post transaction
- Form submissions with the "post" method cannot be bookmarked
- The "post" method is more robust and secure than "get", and "post" does not have size limitations
Differences Between HTML 4.01 and HTML5
The formmethod attribute is new in HTML5.
|get||Default. Appends the form-data to the URL in name/value pairs: URL?name=value&name=value|
|post||Sends the form-data as an HTTP post transaction|
HTML <input> tag
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