JSFiddle - React, Tailwind, and code Playground

HTML

<textarea id="edit-message"></textarea>
<br>
<button type="button" id="guest-button" class="form-submit">Send</button>

JavaScript

alert(sessionStorage.getItem("gbookmsg"));
if(sessionStorage.getItem("gbookmsg") != ""){
    $('#edit-message').val(sessionStorage.getItem("gbookmsg"));
}

$('#guest-button').click(function () {
 
    if (window.sessionStorage) {
        sessionStorage.setItem("gbookmsg", $('#edit-message').val());

       
    }
});