For determining which character to take from an ascii table using row and column indices.

toAsciiIndex.js

var toAsciiIndex = function(str) {
  var i, carr = [], curr;
  for(i = 0; i < str.length; i++) {
    curr = str.charCodeAt(i);
    carr.push([curr%32, Math.floor(curr/32)]);
  }
  return carr;
};

toAsciiIndex("Hah"); // -> [[8,2],[1,3],[8,3]]