Use try/catch/finally to handle errors gracefully. Defensive programming means anticipating failure and handling it, not crashing the program.

• Try/catch/finally to handle errors gracefully

try {
  const result = JSON.parse('{invalid json}');
} catch (error) {
  console.log('Caught error:', error.message);
} finally {
  console.log('Cleanup done');
}

• try-catch catches JSON parsing error

• throw new Error('message') to throw custom errors
• finally block runs whether exception was thrown or not
• Catch specific errors first, then generic Error

Use try/catch/finally to handle errors gracefully. Defensive programming means anticipating failure and handling it, not crashing the program.

• Try/catch/finally to handle errors gracefully

try {
  const result = JSON.parse('{invalid json}');
} catch (error) {
  console.log('Caught error:', error.message);
} finally {
  console.log('Cleanup done');
}

• try-catch catches JSON parsing error

• throw new Error('message') to throw custom errors
• finally block runs whether exception was thrown or not
• Catch specific errors first, then generic Error