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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 |
---|---|
80 | * |
81 | * @since 2.8.0 |
82 | * @since 4.9.0 Added the `$instance` parameter. |
83 | * |
84 | * @see wp_dropdown_categories() |
85 | * |
86 | * @param array $cat_args An array of Categories widget drop-down arguments. |
87 | * @param array $instance Array of settings for the current widget. |
88 | */ |
89 | wp_dropdown_categories( apply_filters( 'widget_categories_dropdown_args', $cat_args, $instance ) ); |
90 |
|
91 | echo '</form>'; |
92 |
|
93 | $type_attr = current_theme_supports( 'html5', 'script' ) ? '' : ' type="text/javascript"'; |
94 | ?> |
95 |
|
96 | <script<?php echo $type_attr; ?>> |
97 | /* <![CDATA[ */ |
98 | (function() { |