Vue Fetch Download File [exclusive] – Pro

const downloadFile = async (url, fileName) => { try { // 1. Fetch the file data const response = await fetch(url, { method: 'GET', headers: { 'Authorization': 'Bearer YOUR_TOKEN' // If auth is required } }); if (!response.ok) throw new Error('Network response was not ok'); // 2. Convert response to a Blob const blob = await response.blob(); // 3. Create a temporary link and trigger download const blobUrl = window.URL.createObjectURL(blob); const link = document.createElement('a'); link.href = blobUrl; link.download = fileName; document.body.appendChild(link); link.click(); // 4. Cleanup to prevent memory leaks document.body.removeChild(link); window.URL.revokeObjectURL(blobUrl); } catch (error) { console.error("Download failed:", error); } }; Use code with caution. Advanced Use Cases 1. Tracking Download Progress

Unlike simple fetching, large files often require a progress bar for better UX. You can achieve this by reading the response.body as a and calculating the percentage based on the content-length header. vue fetch download file

Use response.body.getReader() to consume data chunks incrementally. const downloadFile = async (url, fileName) => { try { // 1

Below is a standard implementation using the Vue 3 Composition API: javascript Create a temporary link and trigger download const

Downloading files in Vue.js applications using the native is a highly efficient, lightweight alternative to external libraries like Axios. While a standard anchor tag ( ) works for simple links, using Fetch allows you to handle authenticated requests with custom headers, process data programmatically, and even track real-time download progress. The Core Implementation Pattern