Unlike an asynchronous Ajax call, HTML5 Web workers provide an opportunity to run a Multi-threaded JavaScript code in modern browsers that support them . Each worker spawns an isolated thread with dedicated JavaScript Event Loop, Stack and Heap memory. For example a regular Ajax Call to MVC Web API service call goes through the following asynchronous call cycle. The JavaScript Event Loop in this case could be interrupted by events that are being executed on the UI; for instance, a "window.alert", could possibly stop all scripts on the page from executing until a user responds. Replacing the Ajax Call with HTML5 web worker provides a great way to run long running scripts in separate threads so that asynchronous code execution is not interrupted by UI events. Here is the a JavaScript worker implementation of the same MVC Web API call using a JavaScript web worker. Despite the advantages of using a web worker, implementing one requires working with some constr...
I was working on Angular lists and needed a easy to implement and reusable solution to make list items draggable . I chose to implement the solution as an Angular directive so that I can pass scope references to the new helper controller and execute ng-repeat, as needed, to recreate Dom elements. After adding the helper controller, I was able to make ng-repeat lists in my application draggable by simply adding a custom attribute and passing the Angular collection name. Here is a Plunkr demo and full GitHub source code .