There are a number of filters provided in WooCommerce Shipping Calculator which allow you to customize the behavior of the plugin.

Please note that this article is aimed at developers. If you don't know how to use this code then you should ask your developer.

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Filters

wsc_script_params

Properties assigned to a global-scope variable containing WooCommerce Shipping Calculator settings passed to the front-end scripts.

Arguments

• $script_data (array): Array of WooCommerce Shipping Calculator parameters.

Example

add_filter( 'wsc_script_params', function( $script_data ) {
	// your code to alter $script_data here...

	return $script_data;
}

wsc_load_styles

add_filter( 'wsc_load_styles', '__return_true' );

add_filter( 'wsc_load_styles', '__return_true' );

add_filter( 'wsc_shipping_calculator_position_action', function( $action ) {
	// Above the add to cart button on the Storefront theme.
	return 'woocommerce_single_product_summary';
} );

add_filter( 'wsc_shipping_calculator_position_priority', function( $priority ) {
	// Above the add to cart button on the Storefront theme.
	return 29;
} );

add_filter( 'wsc_shipping_calculator_shortcode_output', function( $out ) {
	return $out;
} );

add_filter( 'wsc_load_using_ajax', function( $load_using_ajax ) {
	if ( ! is_user_logged_in() ) {
		$load_using_ajax = true;
	}
	return $load_using_ajax;
} );

add_filter( 'wsc_is_shipping_calculator', function( $is_shipping_calculator ) {
	if ( is_product() ) {
		return true;
	}
	return $is_shipping_calculator;
} );

add_filter( 'wsc_is_shipping_calculator_ajax_call', function( $is_ajax_call ) {
	if ( isset( $_REQUEST[ 'wsc' ] ) ) {
		return true;
	}
	return $is_ajax_call;
} );

add_filter( 'wsc_ajax_url_arg', function( $ajax_url_arg ) {
	return 'wsc';
} );

add_filter( 'wsc_setting_position', function( $value, $setting ) {
	// Gets the stored setting value from the database.
	$value = get_option( 'wsc_' . $setting );

	// Do something.
	$value = 'above_title';

	return $value;
}, 10, 2 );

add_filter( 'woocommerce_get_settings_calculator', function( $plugin_settings ) {
	return $plugin_settings;
} );

add_filter( 'wsc_shipping_calculator_position_action_mapping', function( $position_action ) {
	$position_actions['above_title'] = 'woocommerce_single_product_summary:4';
	return $position_action;
} );

add_filter( 'wsc_select_shipping_method', '__return_true' );

add_filter( 'wsc_shipping_totals_class', function( $position_action ) {
	return 'my-custom-css-class';
} );

wsc_shipping_totals_before_shipping

Fired before the shipping calculator is displayed.
This hook is used to estimate the shipping before shipping calculator is displayed.

wsc_shipping_totals_after_shipping

Fired after the shipping calculator is displayed.