关于主题，正如@toscho所说，很容易推翻

关于js文件，您可以轻松地对函数进行denqueue。php并将js文件的副本排队，然后根据您的喜好对其进行自定义，并确保不会在wc更新中过度写入。

替代模板(wordpress/wp-content/plugins/woocommerce/templates/checkout/form-login.php) 和更改\'hidden\' => true, 到\'hidden\' => false,

woocommerce_login_form(
    array(
        \'message\'  => esc_html__( \'If you have shopped with us before, please enter your details below. If you are a new customer, please proceed to the Billing section.\', \'woocommerce\' ),
        \'redirect\' => wc_get_checkout_url(),
        \'hidden\'   => true,
    )
);