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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 347 | if ( $this->do_concat ) { |
| 348 | /** |
| 349 | * Filters the script loader source. |
| 350 | * |
| 351 | * @since 2.2.0 |
| 352 | * |
| 353 | * @param string $src Script loader source path. |
| 354 | * @param string $handle Script handle. |
| 355 | */ |
| 356 | $srce = apply_filters( 'script_loader_src', $src, $handle ); |
| 357 | |
| 358 | if ( |
| 359 | $this->in_default_dir( $srce ) |
| 360 | && ( $before_script || $after_script || $translations_stop_concat || $this->is_delayed_strategy( $strategy ) ) |
| 361 | ) { |
| 362 | $this->do_concat = false; |
| 363 | |
| 364 | // Have to print the so-far concatenated scripts right away to maintain the right order. |
| 365 | _print_scripts(); |
| Line | Code |
| 403 | if ( ! preg_match( '|^(https?:)?//|', $src ) && ! ( $this->content_url && str_starts_with( $src, $this->content_url ) ) ) { |
| 404 | $src = $this->base_url . $src; |
| 405 | } |
| 406 | |
| 407 | if ( ! empty( $ver ) ) { |
| 408 | $src = add_query_arg( 'ver', $ver, $src ); |
| 409 | } |
| 410 | |
| 411 | /** This filter is documented in wp-includes/class-wp-scripts.php */ |
| 412 | $src = esc_url_raw( apply_filters( 'script_loader_src', $src, $handle ) ); |
| 413 | |
| 414 | if ( ! $src ) { |
| 415 | return true; |
| 416 | } |
| 417 | |
| 418 | $attr = array( |
| 419 | 'src' => $src, |
| 420 | 'id' => "{$handle}-js", |
| 421 | ); |