I'm curious about the output of the following JavaScript code:
```javascript
console.log([] + []);
console.log([] + {});
console.log({} + []);
```
Could someone explain why the results are different from each other? 🤔
2 Answers
JavaScript can be a bit wild with how it handles things. Just a tip: try to avoid writing code like this in practice, and you'll be just fine!
The differences happen because JavaScript does some weird implicit type casting. It tries to be lenient to prevent runtime errors because it doesn't have a strict type system. In a more strict language, trying to combine an array and an object like `[] + {}` would throw an error instead. Imagine if you could create custom behavior for the `+` operator; that could make it more useful!
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