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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 |
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74 | /** |
75 | * Filters the arguments for the Categories widget drop-down. |
76 | * |
77 | * @since 2.8.0 |
78 | * |
79 | * @see wp_dropdown_categories() |
80 | * |
81 | * @param array $cat_args An array of Categories widget drop-down arguments. |
82 | */ |
83 | wp_dropdown_categories( apply_filters( 'widget_categories_dropdown_args', $cat_args ) ); |
84 | ?> |
85 |
|
86 | <script type='text/javascript'> |
87 | /* <![CDATA[ */ |
88 | (function() { |
89 | var dropdown = document.getElementById( "<?php echo esc_js( $dropdown_id ); ?>" ); |
90 | function onCatChange() { |
91 | if ( dropdown.options[ dropdown.selectedIndex ].value > 0 ) { |
92 | location.href = "<?php echo home_url(); ?>/?cat=" + dropdown.options[ dropdown.selectedIndex ].value; |