After reading this blog post: http://www.sitepoint.com/javascript-shared-web-workers-html5/
I don\'t get it. What\'s the difference between a Worker and
To anyone considering using SharedWorker -- Apple removed support of SharedWorker from WebKit in 2015. In their current roadmap there is no plan for reimplementation. Support for Service Workers is currently under development for WebKit and offer similar capabilities (see here for comparisons).
You can follow the development (aka Safari support) of ServiceWorkers in WebKit here.