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December 5, 2010 04:59
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WebWorkerでDataURLが使えるか試してみた。使えなかった。
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| var fib = function(n) { | |
| if (n > 1) { | |
| return fib(n-2) + fib(n-1); | |
| } else { | |
| return 1; | |
| } | |
| }; | |
| window.addEventListener('load', function() { | |
| var buttons = document.querySelectorAll('button'); | |
| buttons = Array.prototype.slice.call(buttons); | |
| buttons.forEach(function(e) { | |
| e.addEventListener('click', function() { | |
| e.blur(); | |
| var target_id = e.getAttribute('target'); | |
| var element = document.getElementById(target_id); | |
| var js = element.value; | |
| eval(js); | |
| }, false); | |
| }); | |
| }, false); |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8" /> | |
| <title>Web Worker Sample<title/> | |
| <script src="application.js"></script> | |
| </head> | |
| <body> | |
| <h1>Web Worker Sample</h1> | |
| <section> | |
| <h2>fibonacci function.</h2> | |
| <section> | |
| <pre> | |
| var fib = function(n) { | |
| if (n > 1) { | |
| return fib(n-2) + fib(n-1); | |
| } else { | |
| return 1; | |
| } | |
| }; | |
| </pre> | |
| </section> | |
| </section> | |
| <section> | |
| <h2>Worker js file.</h2> | |
| <section> | |
| <pre> | |
| onmessage = function(e) { | |
| postMessage(e.data.map(fib)); | |
| }; | |
| </pre> | |
| </section> | |
| </section> | |
| <section> | |
| <h2>#1 Worker with outher js file.</h2> | |
| <textarea id="worker1" cols="100" rows="8">var data = [1,2,3,4,5,6,7,8,9,10,20,30]; | |
| var worker = new Worker('worker.js'); | |
| worker.onmessage = function(e) { | |
| alert(e.data.join('\n')); | |
| }; | |
| worker.postMessage(data); | |
| </textarea> | |
| <button target="worker1">eval</button> | |
| </section> | |
| <section> | |
| <h2>#2 Worker with data url.</h2> | |
| <textarea id="worker2" cols="100" rows="10">var worker_js = 'data:text/javascript,var%20fib%20%3D%20function(n)%20%7B%0A%20%20if%20(n%20%3E%201)%20%7B%0A%20%20%20%20return%20fib(n-2)%20%2B%20fib(n-1)%3B%0A%20%20%7D%20else%20%7B%0A%20%20%20%20return%201%3B%0A%20%20%7D%0A%7D%3B%0A%0Aonmessage%20%3D%20function(e)%20%7B%0A%20%20postMessage(e.data.map(fib))%3B%0A%7D%3B'; | |
| var data = [1,2,3,4,5,6,7,8,9,10,20,30]; | |
| var worker = new Worker(worker_js); | |
| worker.onmessage = function(e) { | |
| alert(e.data.join('\n')); | |
| }; | |
| worker.postMessage(data); | |
| </textarea> | |
| <button target="worker2">eval</button> | |
| </section> | |
| </body> | |
| </html> |
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| var fib = function(n) { | |
| if (n > 1) { | |
| return fib(n-2) + fib(n-1); | |
| } else { | |
| return 1; | |
| } | |
| }; | |
| onmessage = function(e) { | |
| postMessage(e.data.map(fib)); | |
| }; |
bummer! Thanks for your feedback!
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"WebWorkerでDataURLが使えるか試してみた。使えなかった" means,
tried, but an exception occurred.