build_dropdown_script_block_core_categories() │ WP 5.0.0

Generates the inline script for a categories dropdown field.

No Hooks.

Returns

String. Returns the dropdown onChange redirection script.

Usage

build_dropdown_script_block_core_categories( $dropdown_id );

$dropdown_id(string) (required)

ID of the dropdown field.

Changelog

build_dropdown_script_block_core_categories() build dropdown script block core categories code ^{WP 6.8.1}

<?php
function build_dropdown_script_block_core_categories( $dropdown_id ) {
	ob_start();
	?>
	<script>
	( function() {
		var dropdown = document.getElementById( '<?php echo esc_js( $dropdown_id ); ?>' );
		function onCatChange() {
			if ( dropdown.options[ dropdown.selectedIndex ].value !== -1 ) {
				location.href = "<?php echo esc_url( home_url() ); ?>/?" + dropdown.name + '=' + dropdown.options[ dropdown.selectedIndex ].value;
			}
		}
		dropdown.onchange = onCatChange;
	})();
	</script>
	<?php
	return wp_get_inline_script_tag( str_replace( array( '<script>', '</script>' ), '', ob_get_clean() ) );
}