What are some common mistakes with hoisting in JavaScript?
An example of an AI chatbot conversation about common hoisting mistakes in JavaScript.
What are some common mistakes with hoisting in JavaScript?
Common mistakes include misunderstanding variable declarations, especially with 'var', 'let', and 'const'.
Can you explain how 'var' behaves differently from 'let' and 'const' when hoisted?
Sure! 'var' is hoisted and initialized to undefined, while 'let' and 'const' are hoisted but not initialized.
What happens if I try to use a variable before declaring it with 'let'?
You'll get a ReferenceError because 'let' variables are in a 'temporal dead zone' until declared.
Are there any best practices to avoid hoisting issues?
Yes! Always declare variables at the top of their scope and use 'let' or 'const' instead of 'var'.
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