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demo js worker
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>Test with worker</title> | |
| <script defer src="main.js"></script> | |
| </head> | |
| <body> | |
| <h1>This is the test with worker!</h1> | |
| <div> | |
| <label for="dataContainer">Response</label> | |
| </div> | |
| <textarea cols="100" rows="60" id="dataContainer"></textarea> | |
| </body> | |
| </html> |
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>Test without worker</title> | |
| <script defer src="main_without_worker.js"></script> | |
| </head> | |
| <body> | |
| <h1>This is the test without worker!</h1> | |
| <div> | |
| <label for="dataContainer">Response</label> | |
| </div> | |
| <textarea cols="100" rows="60" id="dataContainer"></textarea> | |
| </body> | |
| </html> |
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| const url = 'https://api.open-meteo.com/v1/forecast?latitude=52.52&longitude=13.41¤t_weather=true&hourly=temperature_2m,relativehumidity_2m,windspeed_10m'; | |
| const worker = new Worker('./worker.js'); | |
| worker.postMessage([url]); | |
| worker.onmessage = (event) => { | |
| let json = event.data; | |
| let dataContainer = document.getElementById('dataContainer'); | |
| dataContainer.value = JSON.stringify(json); | |
| console.log('Data', json); | |
| } |
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| const url = 'https://api.open-meteo.com/v1/forecast?latitude=52.52&longitude=13.41¤t_weather=true&hourly=temperature_2m,relativehumidity_2m,windspeed_10m'; | |
| fetch(url).then(response => | |
| response.json().then(json => { | |
| const start = (new Date()).getTime(); | |
| while ((new Date()).getTime() - start < 2 * 1000){ | |
| //some slow process | |
| } | |
| let dataContainer = document.getElementById('dataContainer'); | |
| dataContainer.value = JSON.stringify(json); | |
| console.log('Data', json); | |
| })); |
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| addEventListener('message', event => { | |
| const [url] = event.data; | |
| console.log('Worker request start'); | |
| fetch(url).then(response => | |
| response.json().then(json => { | |
| const start = (new Date()).getTime(); | |
| while ((new Date()).getTime() - start < 2 * 1000){ | |
| //some slow process | |
| } | |
| console.log('Worker request done!'); | |
| postMessage(json); | |
| })); | |
| }); |
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