bindup_example.js

function ITEM_VIEW(){ with(BindUp) { return (

  SECTION({id: 'item-view'},
    H2($('name'),
    IMG({
      src: $('imageURL'),
      alt: 'Side-view shot'
    }),
    LABEL('Price'), SPAN($('price')),
    SECTION(
      {
        id: 'reviews', 
        style: {
          display: $ifelse(
            'reviews.length', 
            'block', 'none')
        }
      },
      UL(
        $each('reviews',
          LI(
            H3($('title')),
            P($('text'))
          )
        )
      )
    )
  )

)}}

var item = {
  name: 'Big Huge Muffin',
  imageURL: 'http://s3.amazon.com/.../big_hugh_muffin.jpg',
  price: 12.99,
  reviews: [
     ...
  ]
}

var view = ITEM_VIEW().bind(item)

view.renderTo(document.body)

item.price = 14.99

view.update()