Filter the price input field for Name Your Price WooCommerce Extension

filter_woocommerce_price_input.php

/*
 * Replace title and type input on the price input field for Name Your Price 
 * Ref: https://gist.github.com/helgatheviking/e1326e2047ed621158f86c1d4747e9bc
 * 
 * @param	string $input - the <input> tag
 * @param	string $product_id
 * @param	string $prefix - needed for composites and bundles
 * @return	string
 */

function ltc_change_title_input( $input, $product_id, $prefix ) {
	$title = esc_attr( 'Enter Your Donation', 'wtrwd');
	$replace = sprintf( 'title="%s"', $title );
	$input = str_replace( 'title="nyp"', $replace, $input );
	return $input;
}
add_filter ('woocommerce_get_price_input', 'ltc_change_title_input', 10, 3);

function ltc_change_type_input( $input, $product_id, $prefix ) {
	$type = esc_attr( 'tel', 'your_text_domain'); //change to telephone type so number pad displays on mobile
	$replace = sprintf( 'type="%s"', $type );
	$input = str_replace( 'type="text"', $replace, $input );
	return $input;
}

add_filter ('woocommerce_get_price_input', 'ltc_change_type_input', 10, 3);
endif;