Source
File: wp-includes/class.wp-scripts.php
public function do_item( $handle, $group = false ) {
if ( ! parent::do_item( $handle ) ) {
return false;
}
if ( 0 === $group && $this->groups[ $handle ] > 0 ) {
$this->in_footer[] = $handle;
return false;
}
if ( false === $group && in_array( $handle, $this->in_footer, true ) ) {
$this->in_footer = array_diff( $this->in_footer, (array) $handle );
}
$obj = $this->registered[ $handle ];
if ( null === $obj->ver ) {
$ver = '';
} else {
$ver = $obj->ver ? $obj->ver : $this->default_version;
}
if ( isset( $this->args[ $handle ] ) ) {
$ver = $ver ? $ver . '&' . $this->args[ $handle ] : $this->args[ $handle ];
}
$src = $obj->src;
$cond_before = '';
$cond_after = '';
$conditional = isset( $obj->extra['conditional'] ) ? $obj->extra['conditional'] : '';
if ( $conditional ) {
$cond_before = "<!--[if {$conditional}]>\n";
$cond_after = "<![endif]-->\n";
}
$before_handle = $this->print_inline_script( $handle, 'before', false );
$after_handle = $this->print_inline_script( $handle, 'after', false );
if ( $before_handle ) {
$before_handle = sprintf( "<script%s id='%s-js-before'>\n%s\n</script>\n", $this->type_attr, esc_attr( $handle ), $before_handle );
}
if ( $after_handle ) {
$after_handle = sprintf( "<script%s id='%s-js-after'>\n%s\n</script>\n", $this->type_attr, esc_attr( $handle ), $after_handle );
}
if ( $before_handle || $after_handle ) {
$inline_script_tag = $cond_before . $before_handle . $after_handle . $cond_after;
} else {
$inline_script_tag = '';
}
$translations = $this->print_translations( $handle, false );
if ( $translations ) {
$translations = sprintf( "<script%s id='%s-js-translations'>\n%s\n</script>\n", $this->type_attr, esc_attr( $handle ), $translations );
}
if ( $this->do_concat ) {
/**
* Filters the script loader source.
*
* @since 2.2.0
*
* @param string $src Script loader source path.
* @param string $handle Script handle.
*/
$srce = apply_filters( 'script_loader_src', $src, $handle );
if ( $this->in_default_dir( $srce ) && ( $before_handle || $after_handle || $translations ) ) {
$this->do_concat = false;
// Have to print the so-far concatenated scripts right away to maintain the right order.
_print_scripts();
$this->reset();
} elseif ( $this->in_default_dir( $srce ) && ! $conditional ) {
$this->print_code .= $this->print_extra_script( $handle, false );
$this->concat .= "$handle,";
$this->concat_version .= "$handle$ver";
return true;
} else {
$this->ext_handles .= "$handle,";
$this->ext_version .= "$handle$ver";
}
}
$has_conditional_data = $conditional && $this->get_data( $handle, 'data' );
if ( $has_conditional_data ) {
echo $cond_before;
}
$this->print_extra_script( $handle );
if ( $has_conditional_data ) {
echo $cond_after;
}
// A single item may alias a set of items, by having dependencies, but no source.
if ( ! $src ) {
if ( $inline_script_tag ) {
if ( $this->do_concat ) {
$this->print_html .= $inline_script_tag;
} else {
echo $inline_script_tag;
}
}
return true;
}
if ( ! preg_match( '|^(https?:)?//|', $src ) && ! ( $this->content_url && 0 === strpos( $src, $this->content_url ) ) ) {
$src = $this->base_url . $src;
}
if ( ! empty( $ver ) ) {
$src = add_query_arg( 'ver', $ver, $src );
}
/** This filter is documented in wp-includes/class.wp-scripts.php */
$src = esc_url( apply_filters( 'script_loader_src', $src, $handle ) );
if ( ! $src ) {
return true;
}
$tag = $translations . $cond_before . $before_handle;
$tag .= sprintf( "<script%s src='%s' id='%s-js'></script>\n", $this->type_attr, $src, esc_attr( $handle ) );
$tag .= $after_handle . $cond_after;
/**
* Filters the HTML script tag of an enqueued script.
*
* @since 4.1.0
*
* @param string $tag The `<script>` tag for the enqueued script.
* @param string $handle The script's registered handle.
* @param string $src The script's source URL.
*/
$tag = apply_filters( 'script_loader_tag', $tag, $handle, $src );
if ( $this->do_concat ) {
$this->print_html .= $tag;
} else {
echo $tag;
}
return true;
}