Today, I was reading A Complete Guide to Links and Buttons written by Chris Coyier.
a elements are often misused. To help out, Chris' article gives a good overview of their functionalities and best practices.
One section about button attributes caught my eye. In it, Chris lists the attributes one could use with a
The following attributes were new to me:
It turns out, that you can use these to overwrite the behavior of an associated form.
Let's have a look at an example.
<form action="/some-endpoint" method="post"> <label> Your name <input name="full-name" type="text" required> </label> <button formaction="/some-other-endpoint" formmethod="get" formnovalidate>Submit</button> </form>
The initial configuration of this form leads to a
POST request made to
/some-endpoint. Also, the form should only be submitable when the
full-name input holds a value.
This configuration is overwritten by the submit button though. 😲
If you hit the submit button (or press
ENTER inside of the input field), there is no input value validation anymore (
formnovalidate). The made request is a
GET request (
formmethod) going to
You might not need these "overwrite-attributes" very often, but when you do, I bet they're life-savers!
You can read more about these attributes on MDN, or you can have a look at the above form example on CodePen.
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