Javascript doesnot work in iphone 7

Hi,
Could you please help me.
I am using this javascript as in my app.
"https://rawgit.com/atlance01/vrapp-ionic/master/www/js/lib/videojs-playlist.js"
I am getting a warning as "VIDEOJS: WARN: videojs.plugin() is deprecated; use videojs.registerPlugin() instead". Which does not work in iPhone 7? Please help me.