Add/enqueue custom script in WordPress
function theme_js() { wp_enqueue_script( 'theme_js', get_stylesheet_directory_uri() . '/js/custom.js', array( 'jquery' ), '1.0', true ); } add_action('wp_enqueue_scripts', 'theme_js'); In custom.js add the code like this: jQuery(function($) { $(document).ready(function(){ $('#sec1').addClass('shown'); $('#btn1').addClass('active'); });…