How to override browser data and set default value in woocommerce checkout page from fields?

Question

I'm trying to set up default variable value in woocommerce checkout page

$fields['address_1']['default'] = $cart_item['address'];

It works well only first time customer makes an order, when other order in process browser data is pre-filling fields, so i have used this

add_filter('woocommerce_checkout_get_value','__return_empty_string', 0, 0);

This filter returns with empty fields, but default value also returned empty.

Answer 1

You can try use instead:

add_filter( 'woocommerce_checkout_get_value', 'clear_shipping_fields_values', 5, 2 );
function clear_shipping_fields_values( $value, $input ) {
    $items = WC()->cart->get_cart();
    $item  = reset( $items );

    if( is_checkout() && isset($item['address']) && in_array( $input, ['billing_address_1', 'shipping_address_1']) ) {
        $value = $item['address'];
    }
    return $value;
}

Code goes in functions.php file of your active child theme (or active theme). It should work.