Fuse JS Web Worker implementation

fuse_web_worker.js

/************************
search.js
************************/

// an example of how to implement fuse.js with a web worker
var searchWorker; // initialized in document ready function
if(typeof(Worker) !== "undefined") {
  if(typeof(searchWorker) == "undefined") {
    searchWorker = new Worker('/scripts/searchWorker.js');
  }
  searchWorker.addEventListener('message', function(e) {
    var result = e.data.result;
    var submitForm = e.data.submitForm;
    var input = jQuery('#' + e.data.inputID);
    setFaytResults(result, input, submitForm);
  });
  searchWorker.addEventListener('error', function(e) {
    // if we want error handling, put it here
    console.log(e);
  });
} else {
  // no web worker support - do we need/want a fallback?
}

function searchFuse(options, val, inputID, submitForm) {
  var searchData = getSearchData();
  searchWorker.postMessage({
    searchData: searchData,
    options: options,
    val: val,
    inputID: inputID,
    submitForm: submitForm
  });
}


/************************
searchWorker.js
************************/

/**
 * Add event handler for "message" event.
 * This is triggered whenever worker.postMessage() is called
 * from the parent script.
 * 
 * This function takes an event object with data bound to the `data` property.
 * `input` and `submitForm` values are not used, but they are required in the
 * message handler in the parent - thus, they are simply passed through.
 * 
 * This function initializes a FuseJS object with the search options and then
 * performs a search for the given value. The result array is returned in a message.
 */

// required to get access to the Fuse object
// self is the way to access the global scope within a web worker
self.importScripts('fuse/fuse.min.js');

onmessage = function receiver(e) {
  var searchData = e.data.searchData;
  var options = e.data.options;
  var val = e.data.val;
  var inputID = e.data.inputID;
  var submitForm = e.data.submitForm;

  try {
    var fuse = new Fuse(searchData, options);
    var result = fuse.search(val);
  } catch (e) {
    // assume this failed because FuseJS hadn't loaded yet. Load again and repeat
    self.importScripts('fuse/dist/fuse.min.js');
    var fuse = new Fuse(searchData, options);
    var result = fuse.search(val);
  }

  // this will trigger the "message" event on the worker in the parent script.
  // That is, the "onmessage" handler will be called whenever `postMessage()` is called.
  postMessage({
    result: result,
    submitForm: submitForm,
    inputID: inputID
  });
}