Convert Games with Gold list to JSON

snippet_GwG List.js

// http://en.wikipedia.org/wiki/List_of_Games_with_Gold_games
// http://www.tekrevue.com/complete-xbox-games-with-gold-list-details/

var tables = document.querySelectorAll('table.wikitable')
var data = {
    xbox360: tabular(tables[0]),
    xboxOne: tabular(tables[1])
}

var prettyData = JSON.stringify(data, 0, 2)
save(prettyData)

function tabular(table) {
    var data = { cols: {}, rows: [] }
    var each = Array.prototype.forEach
    var keys = {}

    each.call(table.tHead.rows[0].cells, function (cell, cellIndex) {
        var key = cell.textContent
        if (key) {
            keys[key] = cellIndex
        }
    })

    each.call(table.tBodies[0].rows, function (row, rowIndex) {
        var raw = []
        each.call(row.cells, function (cell, cellIndex) {
            var clone = cell.cloneNode(true)
            each.call(clone.querySelectorAll('.sortkey'), function (el) {
                el.parentNode.removeChild(el)
            })
            raw[cellIndex] = clone.textContent
        })
        data.rows.push(raw)
    })

    data.cols = keys

    return data
}



function save(data, filename) {

    var blob = new Blob([data], {type:'text/json'})
    var e = document.createEvent('MouseEvents')
    var a = document.createElement('a')

    a.download = filename || 'console.json'
    a.href = window.URL.createObjectURL(blob)
    a.dataset.downloadurl =  ['text/json', a.download, a.href].join(':')
    e.initMouseEvent('click', true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null)
    a.dispatchEvent(e)

}