Edit fiddle - JSFiddle - React, Tailwind, and code Playground

JSFiddle - React, Tailwind, and code Playground

HTML

<h1>Form OnSubmit</h1>
<form action="http://www.google.com/search" onsubmit="return confirm('Are you sure you want to search Google?')">
<input type="text" name="q" />
<input type="submit" value="Go" />
</form>
<h1>Input OnClick</h1>
<form action="http://www.google.com/search">
<input type="text" name="q" />
<input type="submit" value="Go" onclick="return confirm('Are you sure you want to search Google?')" />
</form>

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JSFiddle - React, Tailwind, and code Playground

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