count_objects.js

/*
 * Return a count of the total number of objects 'o' satisfying o.x == o.y.
 *
 * Parameter(s):
 * objects: an array of objects with integer properties 'x' and 'y'
 */
function getCount(objects) {
  let count = 0;
  for(let o of objects) {
    if(o.x === o.y) count ++;
  }
  return count;
}