JSFiddle - React, Tailwind, and code Playground
HTML
<form method="post" onsubmit="alert('submitted');">
<input onChange='alert(this.value)' />
<input type="submit" />
</form>
<form method="post" onsubmit="alert('submitted');">
<input onChange='alert(this.value)' />
<input type="submit" />
</form>