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- <html>
- <head>
- <script id='worker' type='javascript/worker'>
- onmessage = function (e) {
- const file = e.data[0]
- const db = indexedDB.open('', {})
- db.onupgradeneeded = function (event) {
- const store = event.target.result.createObjectStore('IDBStore_0', {})
- store.add({}, '')
- }
- db.onsuccess = function (event) {
- const transaction = event.target.result.transaction('IDBStore_0', 'readwrite')
- const store = transaction.objectStore('IDBStore_0')
- const cursor = store.openCursor()
- cursor.onsuccess = function (event) {
- event.target.result.update({
- data: file
- })
- event.target.result.advance(1)
- }
- event.target.result.close()
- }
- }
- </script>
- <script>
- let worker;
- function start () {
- const file = new File([], 'x')
- const blob = new Blob([document.getElementById('worker').textContent], { type: 'text/javascript' })
- worker = new Worker(window.URL.createObjectURL(blob))
- worker.postMessage([file], [])
- }
- document.addEventListener('DOMContentLoaded', start)
- </script>
- </head>
- </html>
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