formaction and formmethod

These attributes are targeted to the <input type="submit"> input fields. They are rarely used, so no questions about them will be asked in the quizzes of Week 5.

<input type="submit"

formaction="preview.php" formmethod="get" value="Preview">

When you use an <input type="submit"> field with the formaction attribute, the action attribute value of the form is overridden. The form will be submitted to the URL / value of the formaction attribute of the  <input type="submit"> field.

The formmethod attribute does the same with the POST/GET method attribute of the form. If an <input type="submit"> has a formmethod attribute, it overrides the value of the method attribute of the form.

Typical use

<form action="post.php" method="post">

     <input type="submit"

            formaction="preview.php" formmethod="get"

            value="Preview">

     <input type="submit" value="Send">

</form>

Line 3 overrides the values set in line 1.

Examples

Here are two online examples at JSBin:

• Example 1 

• Example 2

The first shows a form with two submit buttons: 

• the first button submits to the default URL specified by the action attribute of the form,

• the second button submits to another action specified by its formaction attribute.