How Can I Prevent HTML Buttons from Unexpectedly Submitting Forms?

Preventing Button Form Submissions

In certain scenarios, you may encounter a situation where a button, such as one labeled "remove," unexpectedly submits a form. To resolve this issue, let's explore the underlying cause and a solution.

As mentioned in the provided code, HTML5 buttons have a default behavior of submitting the containing form. This behavior is defined in the W3C HTML5 Button specification. To override this default and prevent the button from submitting the form, you must explicitly specify its type using the "type" attribute.

In the modified code below, the "remove" button has its type set to "button":

<button type="button" onclick="removeItem(); return false;">Remove Last Item</button>

By specifying the "button" type, the button will retain its functionality without triggering the form submission.

Alternatively, you can use an alternative element such as an tag or a element with a click event handler to simulate button behavior without inheriting the default form submission action.

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