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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.
| Line | Code |
|---|---|
| 432 | |
| 433 | echo $before_widget; |
| 434 | if ( $title ) |
| 435 | echo $before_title . $title . $after_title; |
| 436 | |
| 437 | $cat_args = array('orderby' => 'name', 'show_count' => $c, 'hierarchical' => $h); |
| 438 | |
| 439 | if ( $d ) { |
| 440 | $cat_args['show_option_none'] = __('Select Category'); |
| 441 | wp_dropdown_categories(apply_filters('widget_categories_dropdown_args', $cat_args)); |
| 442 | ?> |
| 443 | |
| 444 | <script type='text/javascript'> |
| 445 | /* <![CDATA[ */ |
| 446 | var dropdown = document.getElementById("cat"); |
| 447 | function onCatChange() { |
| 448 | if ( dropdown.options[dropdown.selectedIndex].value > 0 ) { |
| 449 | location.href = "<?php echo home_url(); ?>/?cat="+dropdown.options[dropdown.selectedIndex].value; |
| 450 | } |