shopping_status.js

var get_items = function(){
  var parse_day = function(x){
     var xs = x.replace('購入','').replace('日', '').replace('年', '月').split('月').map(function(x) parseInt(x))
     return new Date(xs[0], xs[1] - 1, xs[2])
  }
  var parse_value = function(x){
     return parseInt(x.replace('円','').replace(',',''))
  }
  var xs = $('.itemBlock').map(
  function(){
    return {
      day:parse_day($(this).find('.day').text()),
      name:$(this).find('.itemName').text(),
      value:parse_value($(this).find('.itemDetail dd').eq(0).text()),
      shop:$(this).find('.itemDetail dd').eq(1).text(),
    }
  })
  var items = []
  for(var i=0;i<xs.size();i++) items.push(xs[i])
  return items
}

Array.prototype.uniq = function(){
  var xs = []
  this.sort().forEach(function(x){
    if(xs[xs.length-1] != x) xs.push(x)
  })
  return xs
} 
var items  = get_items();
var values = items.reduce(function(r, x) r + x.value, 0)
var shops  = items.map(function(x) x.shop).uniq()
var days   = items.map(function(x) x.day)

status = {
hp:items.reduce(function(r, x) r + x.value, 0),
atk:items.map(function(x) x.value),
dex:shop.length,
}