JSFiddle - React, Tailwind, and code Playground
HTML
<button class="btn" type='submit' >ntn</button>
JavaScript
$(document).on( "click", '.btn', 'button[type="submit"]', function( event, ui ) {
alert('true');
} );
<button class="btn" type='submit' >ntn</button>
$(document).on( "click", '.btn', 'button[type="submit"]', function( event, ui ) {
alert('true');
} );