'', 'id' => '', 'height' => '282', 'width' => '450', ); $attr = shortcode_atts( $default_atts, $attr, 'twitter-timeline' ); $attr['username'] = preg_replace( '/[^A-Za-z0-9_]+/', '', $attr['username'] ); if ( empty( $attr['username'] ) ) { return ''; } if ( ! is_numeric( $attr['id'] ) ) { return ''; } $tweets_by = sprintf( __( 'Tweets by @%s', 'jetpack' ), $attr['username'] ); $output = '' . esc_html( $tweets_by ) . ''; wp_enqueue_script( 'jetpack-twitter-timeline' ); return $output; } function twitter_timeline_js() { if ( is_customize_preview() ) { wp_enqueue_script( 'jetpack-twitter-timeline' ); } } add_action( 'wp_enqueue_scripts', 'twitter_timeline_js' );