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JavaScript Base64 Encoding Performance
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1"> | |
| <title>Base64 Encoding Performance</title> | |
| </head> | |
| <body> | |
| <p id="counter"></p> | |
| <input type="file" id="dialog" multiple> | |
| <p id="list"></p> | |
| <script> | |
| let listContent = ""; | |
| const list = document.getElementById("list") | |
| document.getElementById("dialog").addEventListener("change", (e) => { | |
| const files = e.target.files | |
| console.log(files) | |
| for (let i = 0; i < files.length; i++) { | |
| const file = files[i] | |
| console.log(`start converting ${file.name}`) | |
| const reader = new FileReader() | |
| reader.readAsDataURL(file) | |
| reader.onloadend = () => { | |
| console.log(`finish converting ${file.name} (${reader.result.length} bytes)`) | |
| listContent += `${file.name}<br>` | |
| list.innerHTML = listContent | |
| } | |
| } | |
| }) | |
| let count = 0 | |
| const counter = document.getElementById("counter") | |
| setInterval(() => { | |
| counter.innerText = count | |
| count++ | |
| }, 10) | |
| </script> | |
| </body> | |
| </html> |
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