What is the difference between const and let in JavaScript?
An example of an AI chatbot conversation about the differences between const and let in JavaScript.
What is the difference between const and let in JavaScript?
In JavaScript, 'let' allows you to declare variables that can be reassigned, while 'const' is used for variables that should not be reassigned.
Can you give me an example of when to use each?
Sure! Use 'let' when you need a variable that changes, like a counter in a loop. Use 'const' for constants, like configuration values.
Are there any scope differences between them?
Yes, both 'let' and 'const' are block-scoped, meaning they are only accessible within the block they are defined in.
What happens if I try to reassign a const variable?
If you try to reassign a 'const' variable, you'll get a TypeError indicating that you cannot reassign a constant.
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