Front‑End Large File Upload: Principles, Key Features, and Using the enlarge‑file‑upload Library

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async function uploadFunction({ chunk, index, hash, cancelToken }) { const formData = new FormData(); formData.append('chunk', chunk); formData.append('hash', hash); formData.append('index', index); await axios.post('http://localhost:3000/api/users', formData, { cancelToken }); } const config = { chunkSize: 5 * 1024 * 1024, // 5 MB concurrency: 5, maxRetries: 3, uploadFunction, onProgress: (progress) => { document.getElementById('progress').innerText = `上传进度：${progress.toFixed(2)}%`; }, onSuccess: () => { console.log('上传完毕'); }, onSpeed: (speed) => { document.getElementById('speed').innerText = `上传速度：${speed}`; }, }; const { upload, pause, resume, state } = createUploader(config); const fileInput = document.getElementById('fileInput'); fileInput.addEventListener('change', () => { const file = fileInput.files[0]; upload(file); }); document.getElementById('pauseButton').addEventListener('click', pause); document.getElementById('resumeButton').addEventListener('click', resume);