1onconnect = function(event) { 2 var port = event.ports[0]; 3 port.postMessage("Worker connected."); 4 port.onmessage = function(event2) { 5 port.postMessage("Worker got a port."); 6 var anotherport = event2.data.port; 7 anotherport.start(); 8 anotherport.onmessage = function(event3) { 9 anotherport.postMessage("Worker got a message via the passed port."); 10 }; 11 }; 12} 13