--- /dev/null
+<html style="">
+ <head>
+ </head>
+ <body>
+ <button id="sendButton">Put text in shared worker</button>
+ <br>
+ <textarea id="sendText">
+
+ </textarea>
+ <br>
+ <button id="retrieveButton">Retrieve text from shared worker</button>
+ <br>
+ <textarea id="retrieveText">
+
+ </textarea>
+ <br>
+ <button id="closeButton">Close port from shared worker</button>
+ <br>
+ <div id="log">
+ </div>
+ <script src="main.js"></script>
+ </body>
+</html>
--- /dev/null
+(function () {
+ 'use strict';
+
+ var log = document.getElementById('log');
+ var sendText = document.getElementById('sendText');
+ var retrieveText = document.getElementById('retrieveText');
+ var messagePort;
+
+ if (!!window.SharedWorker) {
+ // Shared worker will be released once every tab using that worker is closed.
+ // see: chrome://inspect/#workers
+ var sharedWorker = new SharedWorker('shared.js', 'shared-worker-example');
+
+ var sendButton = document.getElementById('sendButton');
+ sendButton.addEventListener('click', postMessage);
+
+ messagePort = sharedWorker.port;
+ messagePort.onerror = onError;
+ messagePort.onmessage = onMessage;
+ // Starts the sending of messages queued on the port
+ // (only needed when using EventTarget.addEventListener; it is implied when using MessagePort.onmessage.)
+ // messagePort.start();
+
+ } else {
+ log.innerHTML = 'Shared Web Workers not supported. Try with a modern browser. <br>';
+ }
+
+ function postMessage() {
+ messagePort.postMessage(sendText.value);
+ log.insertAdjacentHTML('beforeend', 'Message posted to worker: ' + sendText.value + ' <br>');
+ }
+
+ function onMessage(e) {
+ log.insertAdjacentHTML('beforeend', 'Message received from worker: ' + e.data + ' <br>');
+ }
+
+ function onError() {
+ log.insertAdjacentHTML('beforeend', 'There is an error with the shared worker! <br>');
+ }
+
+ function close() {
+ // I think, calling close method is not required. Once all tabs are closed, shared worker will be released.
+ messagePort.close();
+ }
+
+}());
--- /dev/null
+onconnect = function(e) {
+ var port = e.ports[0];
+
+ port.onmessage = function(e) {
+ var workerResult = 'Result: ' + e.data;
+
+ console.log('SharedWorkerGlobalScope name: ' + name);
+ console.log('SharedWorkerGlobalScope location: ' + location);
+
+ // Data will be sent only to the current active tab.
+ port.postMessage(workerResult);
+ };
+
+};
projects / JavaScriptForFun / commitdiff