how to authenticate instagram and how to get likes,follwers count value?

<script type="text/javascript">
window._strings = {

"%(count)s comments": "%(count)s comments",
"%(count)s followers": "%(count)s followers",
"%(count)s following": "%(count)s following",
"%(count)s likes": "%(count)s likes",
"%(count)s more comments": "%(count)s more comments",
"%(count)s new posts": "%(count)s new posts",
"%(count)s people liked this photo": "%(count)s people liked this photo",
"%(count)s photos,": "%(count)s photos,",
"%(count)s posts": "%(count)s posts",
"%(count)s+ new posts": "%(count)s+ new posts",
"%(day)s %(month_name)s %(year)s": "%(day)s %(month_name)s %(year)s",
"%(days)s days ago": "%(days)s days ago",
"%(days)sd": "%(days)sd",
"%(followerCount)s followers": "%(followerCount)s followers",
"%(hours)s hours ago": "%(hours)s hours ago",
"%(hours)sh": "%(hours)sh",
"%(likes)s likes, %(comments)s comments": "%(likes)s likes, %(comments)s comments",
"%(mediaCount)s photos": "%(mediaCount)s photos",
"%(minutes)s minutes ago": "%(minutes)s minutes ago",
"%(minutes)sm": "%(minutes)sm",
"%(months)s months ago": "%(months)s months ago",
"%(seconds)s seconds ago": "%(seconds)s seconds ago",
"%(seconds)ss": "%(seconds)ss",
"%(user)s on Instagram": "%(user)s on Instagram",
"%(username)s on Instagram": "%(username)s on Instagram",
"%(weeks)s weeks ago": "%(weeks)s weeks ago",
"%(weeks)sw": "%(weeks)sw",
"%(year)s %(month)s": "%(year)s %(month)s",
};
</script>