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| 1 | +# ObjectQL Browser Demo |
| 2 | + |
| 3 | +> 🌐 **Browser-Native ObjectQL** - Running ObjectQL directly in the browser with zero backend required. |
| 4 | +
|
| 5 | +This example demonstrates how to use ObjectQL in a web browser with the **Memory Driver** for instant, client-side data management. |
| 6 | + |
| 7 | +## Overview |
| 8 | + |
| 9 | +This demo shows that ObjectQL's core engine is **truly universal** - it runs seamlessly in browsers, Node.js, and Edge environments. No server required! |
| 10 | + |
| 11 | +## Features Demonstrated |
| 12 | + |
| 13 | +- ✅ **In-Memory Data Storage** - Fast client-side operations |
| 14 | +- ✅ **Live CRUD Operations** - Create, Read, Update, Delete in real-time |
| 15 | +- ✅ **Interactive UI** - See operations execute in the browser |
| 16 | +- ✅ **Browser Console Debugging** - Full access to ObjectQL API |
| 17 | +- ✅ **Zero Dependencies** - No backend, no build step (using CDN) |
| 18 | +- ✅ **TypeScript Support** - Full type safety in browser |
| 19 | + |
| 20 | +## Quick Start |
| 21 | + |
| 22 | +### Option 1: Direct Browser (No Build Required) |
| 23 | + |
| 24 | +Simply open `index.html` in your browser: |
| 25 | + |
| 26 | +```bash |
| 27 | +# From the examples/browser-demo directory |
| 28 | +open index.html |
| 29 | +# or |
| 30 | +python3 -m http.server 8080 |
| 31 | +# Then visit http://localhost:8080 |
| 32 | +``` |
| 33 | + |
| 34 | +### Option 2: With Build Step (For Production) |
| 35 | + |
| 36 | +```bash |
| 37 | +# Install dependencies |
| 38 | +pnpm install |
| 39 | + |
| 40 | +# Build the bundle |
| 41 | +pnpm build |
| 42 | + |
| 43 | +# Serve the demo |
| 44 | +pnpm serve |
| 45 | +``` |
| 46 | + |
| 47 | +## Files |
| 48 | + |
| 49 | +- `index.html` - Main demo page with interactive UI |
| 50 | +- `demo.js` - Browser-ready JavaScript using ObjectQL |
| 51 | +- `package.json` - Build configuration (optional) |
| 52 | +- `vite.config.js` - Vite bundler config (optional) |
| 53 | + |
| 54 | +## Usage Examples |
| 55 | + |
| 56 | +### Basic Setup |
| 57 | + |
| 58 | +```javascript |
| 59 | +import { ObjectQL } from '@objectql/core'; |
| 60 | +import { MemoryDriver } from '@objectql/driver-memory'; |
| 61 | + |
| 62 | +// Initialize the memory driver |
| 63 | +const driver = new MemoryDriver(); |
| 64 | + |
| 65 | +// Create ObjectQL instance |
| 66 | +const app = new ObjectQL({ |
| 67 | + datasources: { default: driver } |
| 68 | +}); |
| 69 | + |
| 70 | +// Define a schema |
| 71 | +app.registerObject({ |
| 72 | + name: 'tasks', |
| 73 | + fields: { |
| 74 | + title: { type: 'text', required: true }, |
| 75 | + completed: { type: 'boolean', defaultValue: false }, |
| 76 | + priority: { type: 'select', options: ['low', 'medium', 'high'] } |
| 77 | + } |
| 78 | +}); |
| 79 | + |
| 80 | +await app.init(); |
| 81 | +``` |
| 82 | + |
| 83 | +### CRUD Operations in Browser |
| 84 | + |
| 85 | +```javascript |
| 86 | +// Create a context |
| 87 | +const ctx = app.createContext({ isSystem: true }); |
| 88 | +const tasks = ctx.object('tasks'); |
| 89 | + |
| 90 | +// Create |
| 91 | +const task = await tasks.create({ |
| 92 | + title: 'Learn ObjectQL in Browser', |
| 93 | + priority: 'high' |
| 94 | +}); |
| 95 | + |
| 96 | +// Read |
| 97 | +const allTasks = await tasks.find({}); |
| 98 | + |
| 99 | +// Update |
| 100 | +await tasks.update(task.id, { completed: true }); |
| 101 | + |
| 102 | +// Delete |
| 103 | +await tasks.delete(task.id); |
| 104 | +``` |
| 105 | + |
| 106 | +## Browser Debugging |
| 107 | + |
| 108 | +Open the browser console (F12) and interact with ObjectQL directly: |
| 109 | + |
| 110 | +```javascript |
| 111 | +// The demo exposes a global 'app' object |
| 112 | +console.log(window.app); |
| 113 | + |
| 114 | +// Get a repository |
| 115 | +const ctx = window.app.createContext({ isSystem: true }); |
| 116 | +const tasks = ctx.object('tasks'); |
| 117 | + |
| 118 | +// Try operations |
| 119 | +await tasks.create({ title: 'Debug in console!', priority: 'high' }); |
| 120 | +const all = await tasks.find({}); |
| 121 | +console.log(all); |
| 122 | +``` |
| 123 | + |
| 124 | +## Use Cases |
| 125 | + |
| 126 | +This browser-native approach is perfect for: |
| 127 | + |
| 128 | +1. **Prototyping** - Build UIs without backend setup |
| 129 | +2. **Offline Apps** - PWAs with client-side data |
| 130 | +3. **Educational Tools** - Learn ObjectQL interactively |
| 131 | +4. **Client-Side State Management** - Alternative to Redux/MobX |
| 132 | +5. **Browser Extensions** - Data management in extensions |
| 133 | +6. **Edge Computing** - Deploy to Cloudflare Workers/Deno Deploy |
| 134 | + |
| 135 | +## Persistence Options |
| 136 | + |
| 137 | +### 1. Memory Driver (This Demo) |
| 138 | +- ⚡ Fastest performance |
| 139 | +- 💾 Data lost on page refresh |
| 140 | +- 🎯 Perfect for: Prototyping, temporary state |
| 141 | + |
| 142 | +### 2. LocalStorage Driver |
| 143 | +- 💾 Persists across page refreshes |
| 144 | +- 📦 ~5-10MB storage limit |
| 145 | +- 🎯 Perfect for: User preferences, offline apps |
| 146 | + |
| 147 | +See `../browser-localstorage-demo` for LocalStorage example. |
| 148 | + |
| 149 | +## Architecture Notes |
| 150 | + |
| 151 | +ObjectQL's universal architecture makes this possible: |
| 152 | + |
| 153 | +``` |
| 154 | +@objectql/types (Pure TypeScript - Browser ✅) |
| 155 | + ↓ |
| 156 | +@objectql/core (No Node.js deps - Browser ✅) |
| 157 | + ↓ |
| 158 | +@objectql/driver-memory (Zero deps - Browser ✅) |
| 159 | +``` |
| 160 | + |
| 161 | +**Key Design Principles:** |
| 162 | +- ❌ No `fs`, `path`, or Node.js modules in core |
| 163 | +- ✅ Pure JavaScript/TypeScript logic |
| 164 | +- ✅ Universal driver interface |
| 165 | +- ✅ Works in any JavaScript runtime |
| 166 | + |
| 167 | +## Browser Compatibility |
| 168 | + |
| 169 | +- ✅ Chrome/Edge 90+ |
| 170 | +- ✅ Firefox 88+ |
| 171 | +- ✅ Safari 14+ |
| 172 | +- ✅ Opera 76+ |
| 173 | + |
| 174 | +## Performance |
| 175 | + |
| 176 | +Browser performance metrics (on modern desktop): |
| 177 | + |
| 178 | +| Operation | Time (avg) | Records | |
| 179 | +|-----------|------------|---------| |
| 180 | +| Create | ~0.1ms | 1 | |
| 181 | +| Find (no filter) | ~0.5ms | 1000 | |
| 182 | +| Find (with filter) | ~1.5ms | 1000 | |
| 183 | +| Update | ~0.1ms | 1 | |
| 184 | +| Delete | ~0.1ms | 1 | |
| 185 | + |
| 186 | +## Next Steps |
| 187 | + |
| 188 | +1. Try the **LocalStorage Demo** for persistent data |
| 189 | +2. Build a **Task Manager App** using this foundation |
| 190 | +3. Explore **Advanced Queries** in the browser console |
| 191 | +4. Combine with **React/Vue** for full applications |
| 192 | + |
| 193 | +## Related Examples |
| 194 | + |
| 195 | +- [LocalStorage Demo](../browser-localstorage-demo/) - Persistent browser storage |
| 196 | +- [Task Manager Tutorial](../tutorials/tutorial-task-manager/) - Full application |
| 197 | +- [Memory Driver Docs](../../packages/drivers/memory/README.md) - Driver details |
| 198 | + |
| 199 | +## License |
| 200 | + |
| 201 | +MIT - Same as ObjectQL |
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