I have just changed this part of class-wc-frontend-scripts.php file which is available in "includes" folder of Woocommerce:
'flexslider' => apply_filters( 'woocommerce_single_product_carousel_options',
array(
'rtl' => is_rtl(),
'animation' => 'fade',
'easing' => 'swing',
'smoothHeight' => true,
'directionNav' => false,
'controlNav' => true,
'slideshow' => true,
'touch' => true,
'animationSpeed' => 1200,
'slideshowSpeed' => 3500,
'animationLoop' => true, // Breaks photoswipe pagination if true.
'allowOneSlide' => true,
'prevText' => "<", //String: Set the text for the "previous" directionNav item
'nextText' => ">", //String: Set the text for the "next" directionNav item
)
),
How can I transfer it to child theme?
Don't override any core files… Instead you can use woocommerce_single_product_carousel_options filter hook as follow:
add_filter( 'woocommerce_single_product_carousel_options', 'filter_single_product_carousel_options' );
function filter_single_product_carousel_options( $args ) {
$args['animation'] = 'fade';
$args['easing'] = 'swing';
$args['controlNav'] = true;
$args['slideshow'] = true;
$args['touch'] = true;
$args['animationSpeed'] = 1200;
$args['slideshowSpeed'] = 3500;
$args['animationLoop'] = true; // Breaks photoswipe pagination if true.
$args['allowOneSlide'] = true;
$args['prevText'] = "<"; // String - Set the text for the "previous" directionNav item
$args['nextText'] = ">"; // String - Set the text for the "next" directionNav item
return $args;
}
Code goes in functions.php file of your active child theme (or active theme). It should work.