Calculate the average number of words used to describe Y Combinator startup

yc-startup-descriptions.js

// 1) visit yclist.com
// 2) open the browser console
// 3) run the following

// get all table rows
var rows = Array.prototype.slice.call(document.querySelectorAll('#companies tbody tr'));

// extract descriptions (use lastChild to skip aquired etc)
var descriptions = rows.map(function (row) { return row.cells[5].lastChild.textContent.trim(); });

// break each description into words
var wordCounts = descriptions.map(function (desc) { return desc.split(' ').length });

// workout the average words
var avgWords = wordCounts.map(function (x, i, arr) { return x / arr.length }).reduce(function (a, b) { return a + b });

// round up and write to console
Math.ceil(avgWords);

// uncomment below to write out the descriptions
// descriptions