workerscript.js Example File

threading/workerscript/workerscript.js

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  //Will be initialized when WorkerScript{} is instantiated
  var cache = new Array(64);
  for (var i = 0; i < 64; i++)
      cache[i] = new Array(64);

  function triangle(row, column) {
      if (cache[row][column])
          return cache[row][column]
      if (column < 0 || column > row)
          return -1;
      if (column == 0 || column == row)
          return 1;
      return triangle(row-1, column-1) + triangle(row-1, column);
  }
  WorkerScript.onMessage = function(message) {
      //Calculate result (may take a while, using a naive algorithm)
      var calculatedResult = triangle(message.row, message.column);
      //Send result back to main thread
      WorkerScript.sendMessage( { row: message.row,
                                  column: message.column,
                                  result: calculatedResult} );
  }