JSFiddle - React, Tailwind, and code Playground

HTML

<form name="Register" action="Register.aspx" method="post" runat="server" style="margin-top: 15px;" onsubmit="return validateProfile(this);" >
     <input type="submit" />
</form>

JavaScript

function validateProfile(F) {
    alert(F.name); 
    return false;
}
window.validateProfile = validateProfile;