Match pairs - array based

matchPairs.js

'use strict';

var i = 0
  , names = [] // add names here
  , len = (names.length / 2);

function matchPair () {
  return selectName() + ' & ' + selectName();
}

function selectName () {
  var name = names[Math.floor((Math.random() * names.length))];

  if (name === undefined) {
    return '__________';
  } else {
    names.splice(names.indexOf(name), 1);
    return name;
  }
}

for (i = 0; i < len; i++)
  console.log('#' + (i + 1) + ' ' + matchPair());