Chaser.js

// You have an array of objects in JavaScript. Each one contains a name (a string) and ranking (a number). 
// Write two functions, one to return the objects ordered by ranking and another to return the average ranking.

var order = function (arr) {
  return arr.sort(function (a, b) {
    if (a.ranking > b.ranking) {
      return 1;
    }
    if (a.ranking < b.ranking) {
      return -1;
    }
    return 0;
  });
}

var avg = function (arr) {
  var sum=0; 
  for(var i=0; i<arr.length; i++) {
    sum += arr[i].ranking; 
  }
  return sum/arr.length;
}