ITDCFeD – Week #10 | Drag & Drop File Upload + Infinite Scroll + Search + Pagination


 

1. تعارف

آئی ٹی درسگاہ سرٹیفائیڈ فرنٹ اینڈ ڈویلپر (ITDCFeD) پروگرام کے دسویں ہفتے میں خوش آمدید۔ اس Week #10 میں modern file management dashboard بنایا جائے گا جو 4 advanced features combine کرتا ہے:

  • Drag & Drop Upload (visual feedback + file processing)

  • Real-time Search (client-side filtering)

  • Infinite Scroll ("Load More" pagination)

  • File Preview Modal (image thumbnails + metadata)

یہ Dropbox/Google Drive جیسے production apps کا core functionality ہے۔


2. اس لیکچر / پروجیکٹ کے اہداف

Week #10 کے اختتام تک آپ:

  • HTML5 Drag & Drop API (dragoverdropdataTransfer.files)

  • FileReader API (URL.createObjectURL() for previews)

  • Infinite Scroll Logic (currentPage × filesPerPage slicing)

  • Real-time Filtering (search + category + recent files)

  • File Metadata (size formatting, date parsing, type detection)

  • Performance Optimization (lazy loading + efficient re-rendering)


3. Live Demo اور Source Code (CodePen)

🔗 Live Demo + Source Code (CodePen):
https://codepen.io/mmshahid73/pen/ZYOvNNK

استعمال کا طریقہ:

  • Drag images/PDFs upload area میں → visual dragover effect

  • Click "click کریں" → file browser

  • Search → real-time filtering

  • Filter dropdown → type/recent files

  • Load More → infinite scroll pagination

  • File Click → preview modal + metadata


4. پروجیکٹ کی ساخت – Technical Breakdown

4.1 HTML – Dashboard Layout

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Upload Area → File Input (hidden) + Stats Controls → Search Input + Filter Select Files Grid → CSS Grid (auto-fill responsive) Load More → Pagination trigger Preview Modal → Image viewer + file info

4.2 CSS – Modern File Manager Design

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✅ Dragover State: border green + scale(1.02) + gradient ✅ File Cards: Hover lift + thumbnail backgrounds ✅ Responsive Grid: minmax(280px, 1fr) auto-fill ✅ Modal Glassmorphism: backdrop-filter + scale animation ✅ Type Badges: PDF(📄), Image colors ✅ Mobile: Stacked controls + smaller cards

4.3 JavaScript – Advanced File Logic

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1. Drag Events: dragover/dragleave/drop + classList.toggle('dragover') 2. File Processing: FileReader + URL.createObjectURL() previews 3. Infinite Scroll: currentPage * filesPerPage slicing 4. Filtering: searchTerm + filterType + isRecent() logic 5. State Management: allFiles[], displayedFiles[], currentPage 6. Metadata: formatFileSize() + date formatting

5. Week #10 اسائنمنٹ / Homework

لازمی کام:

  1. CodePen Fork کریں: https://codepen.io/mmshahid73/pen/ZYOvNNK

  2. 3 نئی File Types support کریں (video, audio, documents)

  3. File Actions add کریں (Delete, Download, Share buttons)

  4. Advanced Search (date range + size filter)

  5. Upload Progress bar implement کریں

  6. Forum Share: CodePen + 3 real files upload + screenshots

Bonus Challenges:

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- LocalStorage persistence (files save کریں) - File sorting (name, size, date) - Bulk select + delete - Folder support (subdirectories) - Real server upload (FormData + fetch)

6. Production Applications + Portfolio Value

Industry-Standard Features:
✅ Cloud Storage (Dropbox, Google Drive)
✅ Media Galleries (WordPress, portfolios)
✅ Document Management (admin panels)
✅ E-learning (assignment uploads)
✅ SaaS Products (file management)

Week #1-10 Portfolio: Complete Professional Frontend Developer!


7. اختتامی پیغام

Week #10 کا یہ Drag & Drop File Manager آپ کو enterprise-grade file handling سکھا دیتا ہے جو Google, Dropbox, AWS جیسے platforms استعمال کرتے ہیں۔ اب fork کریں، video support add کریں، progress bars بنائیں، اور فورم پر share کر کے ITDCFeD intermediate certification track مکمل کریں!

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