Apply Filters in Login Form Usename Field Label

[manishkrag]

I have worked on several WP project and almost in every project my clients requirement was to change the label of login form username field. But as it is hard coded in wp-login.php file it is not possible to do this change without
modifying the same file.

So I think it would be great if you guys can add a filter there.

In such cases we have to do the same changes in WP user profile edit form and registration form as well.

[SergeyBiryukov]

You can change any string via gettext filter:

function change_username_label_29657( $text, $original_text, $domain ) {
	if ( 'Username' === $original_text && 'default' === $domain ) {
		$text = 'Your username';
	}

	return $text;
}
add_filter( 'gettext', 'change_username_label_29657', 10, 3 );

[manishkrag]

Just checked 10n.php flie.
It is awesome.