Created
October 11, 2018 14:17
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measure local network speed
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| <html> | |
| <head> | |
| <meta name="viewport" content="width=device-width, initial-scale=1"> | |
| </head> | |
| <body> | |
| <h1>SPEED TEST</h2> | |
| <div id="results"> | |
| </div> | |
| </body> | |
| <script> | |
| function measure(suffix, callback) { | |
| const results = document.getElementById('results') | |
| const row = document.createElement('div') | |
| const progress = document.createElement('span') | |
| const result = document.createElement('span') | |
| row.appendChild(progress) | |
| row.appendChild(result) | |
| results.appendChild(row) | |
| const t0 = performance.now() | |
| const xhr = new XMLHttpRequest() | |
| xhr.addEventListener('load', (ev) => { | |
| const t1 = performance.now() | |
| const d = (t1 - t0) / 1000 | |
| const bps = 0.001 * 0.001 * ev.total / d | |
| result.innerHTML = ` ${d.toFixed(2)} sec ${bps.toFixed(1)} Mbps` | |
| callback(null) | |
| }) | |
| xhr.addEventListener('progress', (ev) => { | |
| const p = 100 * ev.loaded / ev.total | |
| progress.innerHTML = `${p.toFixed(1)}%` | |
| }) | |
| xhr.addEventListener('error', (ev) => { | |
| callback(ev) | |
| }) | |
| xhr.open('GET', `100mb.bin?${suffix}`) | |
| xhr.send() | |
| } | |
| let count = 0 | |
| function iterateMeasure() { | |
| measure(count++, error => { | |
| if (!error) { | |
| iterateMeasure() | |
| } | |
| }) | |
| } | |
| iterateMeasure() | |
| </script> | |
| </html> |
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