JSFiddle - React, Tailwind, and code Playground
HTML
<form>
<label><b>Enter a Message</b></label>
<input type="text" name="message" id="user_input">
</form>
<input type="submit" onclick="showInput();"><br />
<label>Your input: </label>
<p><span id='display'></span> </p>
JavaScript
function showInput() {
var message_entered = document.getElementById("user_input").value;
document.getElementById('display').innerHTML = message_entered;
}