function rocket_insert_deferred_js($buffer)
{
// Don't add anything on 404 page or on a page without these query strings
if (is_404() || !empty($_GET) && !isset($_GET['utm_source'], $_GET['utm_medium'], $_GET['utm_campaign']) && !isset($_GET['fb_action_ids'], $_GET['fb_action_types'], $_GET['fb_source']) && !isset($_GET['gclid']) && !isset($_GET['permalink_name']) && !isset($_GET['lp-variation-id']) && !isset($_GET['lang'])) {
return;
}
/**
* Filter LABjs file URL
*
* @since 1.1.0
*
* @param string LABjs file URL
*/
$labjs_src = WP_ROCKET_FRONT_JS_URL . 'LAB.' . WP_ROCKET_LAB_JS_VERSION . '.min.js';
$labjs_src = get_rocket_cdn_url($labjs_src, array('all', 'css_js', 'js'));
$labjs_src = apply_filters('rocket_labjs_src', $labjs_src);
/**
* Filter list of LABjs options
*
* @since 1.1.0
*
* @param array List of LABjs options
*/
$labjs_options = apply_filters('rocket_labjs_options', array('AlwaysPreserveOrder' => true));
/**
* Filter list of Deferred JavaScript files waiting to load
*
* @since 1.1.0
*
* @param array List of Deferred JavaScript files waiting to load
*/
$deferred_js_wait = apply_filters('rocket_minify_deferred_js_wait', get_rocket_option('deferred_js_wait'));
$defer = '<script src="' . $labjs_src . '" data-no-minify="1"></script>';
$defer .= '<script>';
$defer .= '$LAB';
// Set LABjs options
// All options is available in http://labjs.com/documentation.php#optionsobject
if (count($labjs_options)) {
$defer .= '.setOptions(' . json_encode($labjs_options) . ')';
}
$deferred_js_files = get_rocket_deferred_js_files();
foreach ($deferred_js_files as $k => $js) {
$wait = $deferred_js_wait[$k] == '1' ? '.wait(' . esc_js(apply_filters('rocket_labjs_wait_callback', false, $js)) . ')' : '';
$defer .= '.script("' . esc_js($js) . '")' . $wait;
}
$defer .= ';</script>';
echo $defer;
}
function __rocket_extract_js_files_from_footer()
{
global $rocket_enqueue_js_in_footer, $wp_scripts, $pagenow;
/** This filter is documented in inc/front/process.php */
$rocket_cache_search = apply_filters('rocket_cache_search', false);
if (isset($wp_scripts->in_footer) && !is_array($wp_scripts->in_footer) || !get_rocket_option('minify_js', false) || in_array($pagenow, array('wp-login.php', 'wp-register.php')) || defined('DONOTMINIFYJS') && DONOTMINIFYJS || defined('DONOTCACHEPAGE') && DONOTCACHEPAGE || is_rocket_post_excluded_option('minify_js') || is_404() || is_search() && !$rocket_cache_search) {
return;
}
// Digg Digg (https://wordpress.org/plugins/digg-digg/)
if (defined('DD_PLUGIN_URL')) {
$rocket_enqueue_js_in_footer[] = DD_PLUGIN_URL . '/js/diggdigg-floating-bar.js';
}
// nrelate Flyout (https://wordpress.org/plugins/nrelate-flyout/)
if (defined('NRELATE_PLUGIN_VERSION')) {
$rocket_enqueue_js_in_footer[] = NRELATE_JS_DEBUG ? 'http://staticrepo.nrelate.com/common_wp/' . NRELATE_PLUGIN_VERSION . '/nrelate_js.js' : NRELATE_ADMIN_URL . '/nrelate_js.min.js';
}
$home_host = parse_url(home_url(), PHP_URL_HOST);
$deferred_js_files = get_rocket_deferred_js_files();
$excluded_js = get_rocket_exclude_js();
$excluded_external_js = get_rocket_minify_excluded_external_js();
foreach ($wp_scripts->in_footer as $handle) {
$script_src = $wp_scripts->registered[$handle]->src;
$script_src = strstr($script_src, '/wp-includes/js/') ? $wp_scripts->base_url . $script_src : $script_src;
$script_src_cleaned = str_replace(array('http:', 'https:', '//' . $home_host), '', $script_src);
if (in_array($handle, $wp_scripts->queue) && !in_array(parse_url($script_src, PHP_URL_HOST), $excluded_external_js) && !in_array($script_src, $deferred_js_files) && !in_array(parse_url($script_src, PHP_URL_PATH), $excluded_js) && !in_array(parse_url($script_src_cleaned, PHP_URL_PATH), $excluded_js)) {
// Dequeue JS files without extension
if (pathinfo($script_src, PATHINFO_EXTENSION) == '') {
wp_dequeue_script($handle);
}
// Add protocol on external JS to prevent conflict
if ($home_host != parse_url($script_src, PHP_URL_HOST) && strpos($script_src, 'http://') === false && strpos($script_src, 'https://') === false) {
$script_src = set_url_scheme($script_src);
}
// Add dependency enqueued in the footer
foreach ($wp_scripts->registered[$handle]->deps as $handle_dep) {
if (in_array($handle_dep, $wp_scripts->in_footer)) {
$src = $wp_scripts->registered[$handle_dep]->src;
$src = strstr($src, '/wp-includes/js/') ? $wp_scripts->base_url . $src : $src;
$rocket_enqueue_js_in_footer[$handle_dep] = rocket_set_internal_url_scheme($src);
}
}
$rocket_enqueue_js_in_footer[$handle] = rocket_set_internal_url_scheme($script_src);
}
}
}