You can use the code in this article as a starting point to providing cross domain access.
RewriteEngine On
# Some hosts may require you to use the `RewriteBase` directive.
# If you need to use the `RewriteBase` directive, it should be the
# absolute physical path to the directory that contains this htaccess file.
#
# RewriteBase /
# Cross domain access
Header unset Access-Control-Allow-Origin
Header unset Access-Control-Allow-Headers
Header unset Access-Control-Allow-Methods
Header add Access-Control-Allow-Origin "*"
Header add Access-Control-Allow-Headers "X-Requested-With, Content-Type, Accept, Origin, Authorization, X-Access-Token, X-New-Access-Token"
Header add Access-Control-Allow-Methods "PUT, GET, POST, DELETE, OPTIONS, PATCH"
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ index.php [QSA,L]
Code language: PHP (php)
X-Access-Token
, X-New-Access-Token
are my application headers.
Source: