# Search Implementation

## MongoDB Text Search

```javascript
const productSchema = new mongoose.Schema({
  name: String,
  description: String
});

productSchema.index({ name: 'text', description: 'text' });

const Product = mongoose.model('Product', productSchema);

app.get('/search', async (req, res) => {
  const query = req.query.q;
  
  const products = await Product.find(
    { $text: { $search: query } },
    { score: { $meta: 'textScore' } }
  ).sort({ score: { $meta: 'textScore' } });
  
  res.json(products);
});
```

## Regex Search

```javascript
app.get('/search', async (req, res) => {
  const query = req.query.q;
  
  const products = await Product.find({
    $or: [
      { name: { $regex: query, $options: 'i' } },
      { description: { $regex: query, $options: 'i' } }
    ]
  });
  
  res.json(products);
});
```

## With Filters

```javascript
app.get('/search', async (req, res) => {
  const { q, category, minPrice, maxPrice } = req.query;
  
  const query = {};
  
  if (q) {
    query.$text = { $search: q };
  }
  
  if (category) {
    query.category = category;
  }
  
  if (minPrice || maxPrice) {
    query.price = {};
    if (minPrice) query.price.$gte = parseInt(minPrice);
    if (maxPrice) query.price.$lte = parseInt(maxPrice);
  }
  
  const products = await Product.find(query);
  
  res.json(products);
});
```

## Autocomplete

```javascript
app.get('/autocomplete', async (req, res) => {
  const query = req.query.q;
  
  const suggestions = await Product.find({
    name: { $regex: `^${query}`, $options: 'i' }
  })
  .limit(10)
  .select('name');
  
  res.json(suggestions.map(p => p.name));
});
```

## Key Takeaway

Use MongoDB text index for full-text search. Regex for simple searches. Combine search with filters. Add autocomplete for better UX.

Implement search functionality. Learn full-text search and fuzzy matching.

Search Implementation

Learn Node.js, NodeJS, and Node JS from basics to advanced concepts including async programming, APIs, and backend development.

Search Implementation

Search Implementation

MongoDB Text Search

Regex Search

With Filters

Autocomplete

Key Takeaway

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