: For very large files, consider using libraries like FileSaver.js which provide better cross-browser compatibility and handle larger data streams more effectively than the manual anchor method.
Axios is the preferred library for many Vue developers due to its easy handling of binary data. javascript vue 3 download file
import axios from 'axios'; const downloadFile = async () => { try { const response = await axios.get('/api/report/pdf', { responseType: 'blob', // CRITICAL: Tells Axios to handle binary data }); // 1. Create a URL for the Blob const url = window.URL.createObjectURL(new Blob([response.data])); // 2. Create a temporary anchor element const link = document.createElement('a'); link.href = url; // 3. Set the desired filename link.setAttribute('download', 'report.pdf'); // 4. Trigger the download document.body.appendChild(link); link.click(); // 5. Cleanup to prevent memory leaks document.body.removeChild(link); window.URL.revokeObjectURL(url); } catch (error) { console.error('Download failed:', error); } }; Use code with caution. : For very large files, consider using libraries
: Ensure your backend includes the Access-Control-Allow-Origin header. If the file is on a different domain, the browser may block the request unless CORS is properly configured. Create a URL for the Blob const url = window
const downloadWithFetch = async () => { const response = await fetch('/api/data.csv'); const blob = await response.blob(); const url = window.URL.createObjectURL(blob); const a = document.createElement('a'); a.href = url; a.download = 'data.csv'; a.click(); window.URL.revokeObjectURL(url); }; Use code with caution.
: Always use window.URL.revokeObjectURL(url) after the download triggers. Failing to do so can lead to memory leaks, as the browser will keep the file data in memory until the page is closed. Which Method Should You Choose? How to download files using axios - Stack Overflow