<!-- Any copyright is dedicated to the Public Domain. http://creativecommons.org/publicdomain/zero/1.0/ --> <!DOCTYPE HTML> <html> <head> <title>Test for SharedWorker</title> </head> <body> <script type="text/javascript;version=1.7"> "use strict"; function debug(message) { if (typeof(message) != "string") { throw new Error("debug() only accepts strings!"); } parent.postMessage(message, "*"); } let worker; window.addEventListener("message", function(event) { if (!worker) { worker = new SharedWorker("multi_sharedWorker_sharedWorker.js", "FrameWorker"); worker.onerror = function(event) { debug("Worker error: " + event.message); event.preventDefault(); let data = { type: "error", message: event.message, filename: event.filename, lineno: event.lineno, isErrorEvent: event instanceof ErrorEvent }; parent.postMessage(data, "*"); }; worker.port.onmessage = function(event) { debug("Worker message: " + JSON.stringify(event.data)); parent.postMessage(event.data, "*"); }; } debug("Posting message: " + JSON.stringify(event.data)); worker.port.postMessage(event.data); }); </script> </body> </html>