Neat little random array generator I came up with for a thought experiment.

run-along.js

function runAlongFolks ( init, iter, deviation ) {
  var n = init || 150,
      arr = [];

  for ( var i = 0; i < iter; i++ ) {
    var a = Math.floor(Math.random() * (deviation - (-deviation) + 1)) - deviation;
    arr.push(n);
    n += a;
  }

  return arr;
}