What are common errors when iterating over objects in JavaScript?
An example of an AI chatbot conversation about common object iteration errors in JavaScript.
What are common errors when iterating over objects in JavaScript?
Common errors include using for...in incorrectly, not checking for own properties, and modifying the object during iteration.
Can you explain why using for...in can be problematic?
Using for...in iterates over all enumerable properties, including inherited ones, which can lead to unexpected results.
What should I use instead of for...in?
You can use Object.keys() with forEach() or Object.entries() to iterate over an object's own properties safely.
Are there any performance considerations I should be aware of?
Yes, using for...of with Object.entries() can be more performant for large objects, as it avoids prototype chain issues.
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