​

    const ka = ['id', 'token', 'family', 'grade', 'hex'];

​

    const k = 'token';

    const fl = function(e) {

      return e !== k

    };

    const fna = function() {

      return ka.filter(fl)

    };

​

fna();

​

    const ka = ['id', 'token', 'family', 'grade', 'hex'];

​

    const k = 'token';

    const fl = function(e) {

      return e !== k

    };

    const fna = function() {

      return ka.filter(fl)

    };

​

fna();