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Basic web worker
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset='utf-8' /> | |
| </head> | |
| <body> | |
| <div>Type some stuff and click send (or hit enter)</div> | |
| <input type='text' id='input' onkeyup="onKeyUp(event)" autofocus="autofocus"></input> | |
| <button onclick='send_text()'>Send</button> | |
| <div id='output'></div> | |
| <script id='worker' type='javascript/worker'> | |
| // Runs on worker | |
| function send(object) { | |
| self.postMessage(object); | |
| } | |
| function receive(obj) { | |
| var response = { | |
| methodName: 'echo', | |
| arg: obj | |
| }; | |
| send(response); | |
| } | |
| self.onmessage = function(e) { receive(e.data); }; | |
| </script> | |
| <script id='main'> | |
| // Worker stuff | |
| var blob = new Blob([document.querySelector('#worker').textContent]); | |
| var worker = new Worker(window.URL.createObjectURL(blob)); | |
| function send(obj) { | |
| worker.postMessage(obj); | |
| } | |
| function receive(obj) { | |
| log('worker->main$ ' + JSON.stringify(obj)); | |
| log('-------------------------'); | |
| } | |
| worker.onmessage = function(e) { receive(e.data); }; | |
| // Hook up html input/output to worker | |
| var input = document.getElementById('input'); | |
| function send_text() { | |
| var text = input.value.trim(); | |
| input.value = ''; | |
| input.focus(); | |
| if(text) { | |
| send(text); | |
| log("main->worker$ " + text); | |
| } | |
| } | |
| var output = document.getElementById('output'); | |
| function log(text) { | |
| output.innerHTML = output.innerHTML + '<div><code>' + text + '</code></div>'; | |
| } | |
| function onKeyUp(e) { | |
| var charCode = (typeof e.which === "number") ? e.which : e.keyCode; | |
| if(charCode === 13) { | |
| send_text(); | |
| } | |
| } | |
| </script> | |
| </body> | |
| </html> |
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