Advent Answers

day-1.js

function stepThrough() {
  var instructions = document.getElementsByTagName('pre')[0].textContent;
  var regexp = /[()]/g;
  var split = instructions.match(regexp);
  var floor = 1;
  var i = 0;
  do {
   floor = split[i] === "(" ? floor + 1 : floor - 1;
   i++;
  } while (floor > 0)
    return i;
  }

day-2.js

var w = {
 total: 0,
 estimatePaper: function() {
  total = 0;
  var packages = document.getElementsByTagName('pre')[0].textContent.split('\n');
  packages.forEach(this.packageDims.bind(this));
  return this.total;
},
packageDims: function(pkg) {
  if (pkg.indexOf("x") === -1) { return [0];}
  var d = pkg.split("x").map(function(i){ return parseInt(i, 10); });
  var p = [(d[0]*d[1]),(d[1]*d[2]),(d[2]*d[0])].sort(function(a, b) { return a - b;});
  var paper = (p[0] + (2 * p.reduce(function(a, b){ return a + b;}) ));
  this.total = this.total + paper;
},
}