What is the difference between typeof and instanceof?
An example of an AI chatbot conversation about the differences between typeof and instanceof in JavaScript.
Can you explain the difference between typeof and instanceof in JavaScript?
Sure! typeof is an operator that returns a string indicating the type of a variable, while instanceof checks if an object is an instance of a specific class or constructor.
Can you give me an example of how to use both?
Absolutely! For typeof, you might use it like this: typeof 'hello' returns 'string'. For instanceof, you could check: [] instanceof Array which returns true.
Are there any types that typeof can't accurately identify?
Yes, typeof can be misleading for certain types, like null, which returns 'object', and for arrays, which return 'object' as well.
So, when should I use one over the other?
Use typeof for primitive types and instanceof when you need to check the type of an object or its inheritance.
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