Two examples of setting ACL controls using Parse JS SDK

parse_acl.js

// ACL to restrict write to user, and public read access
var custom_acl = new Parse.ACL();
// give write access to the current user
custom_acl.setWriteAccess( Parse.User.current(), true);
// give public read access
custom_acl.setPublicReadAccess(true);
GameObject.setACL(custom_acl);

// ACL to restrict write to user, and no public access
var custom_acl = new Parse.ACL();
// give write access to the current user
custom_acl.setWriteAccess( Parse.User.current(), true);
// disable public read access
custom_acl.setPublicReadAccess(false);
GameObject.setACL(custom_acl);