WordPress at a glance
filter is not described

woocommerce_sale_flash filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_sale_flash', 'filter_function_name_1470', 10, 3 );
function filter_function_name_1470( $html, $post, $product ){
	// filter...

	return $html;
}
$html
-
$post
-
$product
-

Where the hook is called

In file: /templates/loop/sale-flash.php
woocommerce_sale_flash
woocommerce/templates/loop/sale-flash.php 27
<?php echo apply_filters( 'woocommerce_sale_flash', '<span class="onsale">' . esc_html__( 'Sale!', 'woocommerce' ) . '</span>', $post, $product ); ?>
woocommerce/templates/single-product/sale-flash.php 27
<?php echo apply_filters( 'woocommerce_sale_flash', '<span class="onsale">' . esc_html__( 'Sale!', 'woocommerce' ) . '</span>', $post, $product ); ?>

Where in WP core the hook is used WooCommerce

Usage not found.