add_section( 'custom_js', array( 'title' => __( 'Additional JS', 'textdomain' ), 'priority' => 190, ) ); $wp_customize->add_setting( 'custom_js', array( 'type' => 'option', ) ); $wp_customize->add_control( new WP_Customize_Code_Editor_Control( $wp_customize, 'custom_html', array( 'code_type' => 'javascript', 'settings' => 'custom_js', 'section' => 'custom_js', ) ) ); } add_action( 'customize_register', 'mdlr_customize_register' ); /** * Outputs Additional JS to site footer * * @since 1.0.0 * @return void */ function mdlr_additional_js_output() { $js = get_option( 'custom_js', '' ); if ( !empty( $js ) ) { ?>