Created
August 27, 2021 22:53
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Network caching test harness
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| <!DOCTYPE html> | |
| <html> | |
| <head></head> | |
| <body> | |
| <select id="cacheModeSelect"> | |
| <option>default</option> | |
| <option>force-cache</option> | |
| </select> | |
| <script type="text/javascript"> | |
| URL = 'https://unpkg.com/[email protected]/dist/jquery.js'; | |
| const script = document.createElement('script'); | |
| script.src = URL; | |
| document.body.appendChild(script); | |
| </script> | |
| <button id="loadFileButton">Load file</button> | |
| <button id="loadFileWorkerButton">Load file from worker</button> | |
| <script type="text/javascript" src="script.js"></script> | |
| </body> | |
| </html> |
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| const worker = new Worker('worker.js'); | |
| const fetchOptions = { | |
| cache: 'default', | |
| }; | |
| const cacheModeSelect = document.getElementById('cacheModeSelect'); | |
| cacheModeSelect.addEventListener('change', () => { | |
| fetchOptions.cache = cacheModeSelect.value; | |
| worker.postMessage({ type: 'set-cache-mode', value: cacheModeSelect.value }); | |
| }); | |
| const loadFileButton = document.getElementById('loadFileButton'); | |
| loadFileButton.addEventListener('click', () => { | |
| fetchFile(URL); | |
| }); | |
| const loadFileWorkerButton = document.getElementById('loadFileWorkerButton'); | |
| loadFileWorkerButton.addEventListener('click', () => { | |
| worker.postMessage({ type: 'fetch-file', value: URL }); | |
| }); | |
| function fetchFile(url) { | |
| performance.mark('loadFile-start'); | |
| fetch(url, fetchOptions).then(() => { | |
| performance.mark('loadFile-end'); | |
| performance.measure('loadFile', 'loadFile-start', 'loadFile-end'); | |
| }); | |
| } |
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| const fetchOptions = { | |
| cache: 'default', | |
| }; | |
| self.addEventListener('message', ({data}) => { | |
| switch (data.type) { | |
| case 'fetch-file': | |
| fetchFile(data.value); | |
| break; | |
| case 'set-cache-mode': | |
| fetchOptions.cache = data.value; | |
| break; | |
| } | |
| }); | |
| function fetchFile(url) { | |
| performance.mark('loadFile-start'); | |
| fetch(url, fetchOptions).then(() => { | |
| performance.mark('loadFile-end'); | |
| performance.measure('loadFile', 'loadFile-start', 'loadFile-end'); | |
| }); | |
| } |
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