wp_enqueue_script( 'my-script', get_bloginfo('template_directory') . '/js/custom_script.js' );
$params = array(
    0 => array(
        'lat' => '35',
        'long' => '45'
    ),
    1 => array(
        'lat' => '40',
        'long' => '50'
    )
);
$encoded_data = array( 'l10n_print_after' => 'myloc = '.json_encode($params).';' );
wp_localize_script(  'my-script', 'myloc', $encoded_data  );