4 views 
Summery Summery
Generates the inline script for a categories dropdown field.
Syntax Syntax
Parameters Parameters
- $dropdown_id
-
(Required) ID of the dropdown field.
Return Return
(string) Returns the dropdown onChange redirection script.
Source Source
File: wp-includes/blocks/categories.php
function build_dropdown_script_block_core_categories( $dropdown_id ) {
ob_start();
?>
<script type='text/javascript'>
/* <![CDATA[ */
( function() {
var dropdown = document.getElementById( '<?php echo esc_js( $dropdown_id ); ?>' );
function onCatChange() {
if ( dropdown.options[ dropdown.selectedIndex ].value > 0 ) {
location.href = "<?php echo home_url(); ?>/?cat=" + dropdown.options[ dropdown.selectedIndex ].value;
}
}
dropdown.onchange = onCatChange;
})();
/* ]]> */
</script>
<?php
return ob_get_clean();
}