# JavaScript Error Handling

## Why Handle Errors?

Errors happen. Without handling, your app crashes.

```
┌─────────────────────┐
│   Code runs         │
│   Error occurs      │
└──────────┬──────────┘
            │
┌───────────▼───────────┐
│   App crashes!        │
│   (Bad user experience)│
└───────────────────────┘
```

## try/catch Block

```javascript
try {
  // Code that might fail
  const data = JSON.parse(invalidJson);
} catch (error) {
  // Handle error
  console.error('Error:', error.message);
}
```

**Flow:**
```
try block
  ├─ Success → Continue
  └─ Error → Jump to catch block
```

## Throwing Errors

```javascript
function divide(a, b) {
  if (b === 0) {
    throw new Error('Cannot divide by zero');
  }
  return a / b;
}
```

## Key Takeaway

Handle errors with try/catch. Prevent app crashes. Provide user-friendly error messages. Essential for robust applications.

Master error handling in JavaScript. Learn try/catch, throw, and how to handle errors gracefully.

JavaScript Error Handling: try/catch

Deep dive into JavaScript, JS, and ECMAScript fundamentals, ES6+, and advanced concepts.

JavaScript Error Handling: try/catch

JavaScript Error Handling

Why Handle Errors?

try/catch Block

Throwing Errors

Key Takeaway

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