Created
April 4, 2012 09:14
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Example of a blob builder.
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8" /> | |
| </head> | |
| <body> | |
| <div id="log"></div> | |
| <script id="worker1" type="javascript/worker"> | |
| // This script won't be parsed by JS engines because its type is javascript/worker. | |
| self.onmessage = function(e) { | |
| self.postMessage('msg from worker 1'); | |
| }; | |
| // Rest of your worker code goes here. | |
| </script> | |
| <script id="worker2" type="javascript/worker"> | |
| // This script won't be parsed by JS engines because its type is javascript/worker. | |
| self.onmessage = function(e) { | |
| self.postMessage('msg from worker 2'); | |
| }; | |
| // Rest of your worker code goes here. | |
| </script> | |
| <script> | |
| function log(msg) { | |
| // Use a fragment: browser will only render/reflow once. | |
| var fragment = document.createDocumentFragment(); | |
| fragment.appendChild(document.createTextNode(msg)); | |
| fragment.appendChild(document.createElement('br')); | |
| document.querySelector("#log").appendChild(fragment); | |
| } | |
| var bb = new BlobBuilder(); | |
| bb.append(document.querySelector('#worker1').textContent); | |
| bb.append(document.querySelector('#worker2').textContent); | |
| // Note: window.webkitURL.createObjectURL() in Chrome 10+. | |
| var worker = new Worker(window.URL.createObjectURL(bb.getBlob())); | |
| worker.onmessage = function(e) { | |
| log("Received: " + e.data); | |
| } | |
| worker.postMessage(); // Start the worker. | |
| </script> | |
| </body> | |
| </html> |
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