| 62 | return result; |
| 63 | }; |
| 64 | function base64ToBlob(base64, mime) { |
| 65 | mime = mime || ""; |
| 66 | const sliceSize = 1024; |
| 67 | const byteChars = window.atob(base64); |
| 68 | const byteArrays = []; |
| 69 | for ( |
| 70 | let offset = 0, len = byteChars.length; |
| 71 | offset < len; |
| 72 | offset += sliceSize) { |
| 73 | const slice = byteChars.slice(offset, offset + sliceSize); |
| 74 | |
| 75 | const byteNumbers = new Array(slice.length); |
| 76 | for (let i = 0; i < slice.length; i++) { |
| 77 | byteNumbers[i] = slice.charCodeAt(i); |
| 78 | } |
| 79 | |
| 80 | const byteArray = new Uint8Array(byteNumbers); |
| 81 | |
| 82 | byteArrays.push(byteArray); |
| 83 | } |
| 84 | |
| 85 | return new Blob(byteArrays, { |
| 86 | type: mime |
| 87 | }); |
| 88 | } |
| 89 | document.getElementById("document") |
| 90 | .addEventListener("change", handleFileSelect, false); |
| 91 | |