What is the difference between let and var in JavaScript?
An example of an AI chatbot conversation about the differences between let and var in JavaScript.
What is the difference between let and var in JavaScript?
The main difference is that 'var' is function-scoped, while 'let' is block-scoped. This affects variable accessibility.
Can you give me an example of when to use let instead of var?
Sure! Use 'let' in loops or conditionals where you want the variable to be limited to that block.
What happens if I declare a variable with the same name using let and var?
If you declare a variable with 'var' and then with 'let' in the same scope, it will cause a syntax error.
Is it a good practice to use var anymore?
It's generally recommended to use 'let' or 'const' for better scoping and to avoid hoisting issues.
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