async function openFile() { try { // Opens the native file picker const [fileHandle] = await window.showOpenFilePicker({ types: [ { description: 'Images', accept: { 'image/*': ['.png', '.gif', '.jpeg', '.jpg'] } }, ], excludeAcceptAllOption: true, multiple: false }); const file = await fileHandle.getFile(); console.log(`Opened: ${file.name}`); } catch (err) { console.error('User cancelled or browser not supported'); } } Use code with caution. Copied to clipboard 3. Essential Features
For a more professional "Open" or "Save" experience, modern browsers support the . This allows you to show a picker that feels like a native desktop application. javascript file dialog box using javascript
The simplest way to open a file dialog is using a hidden file input and a custom button. async function openFile() { try { // Opens
: For privacy, JavaScript cannot see the full local file path (e.g., C:/Users/Documents/file.txt ). It only gets the file name and the data itself. This allows you to show a picker that
: Browsers will block a file dialog from opening unless it is triggered by a direct user action (like a click ).
: Restricts the file types (e.g., accept=".pdf, .doc" or accept="image/*" ).