What are the different types of variables in JavaScript?
An example of an AI chatbot conversation about JavaScript variable types and their usage.
What are the different types of variables in JavaScript?
In JavaScript, there are three main types of variables: var, let, and const. Each has its own scope and usage.
Can you explain the difference between var, let, and const?
Sure! 'var' is function-scoped, 'let' is block-scoped, and 'const' is also block-scoped but cannot be reassigned.
When should I use let instead of var?
You should use 'let' when you need a variable that is limited to the block scope, which helps avoid issues with variable hoisting.
What happens if I try to reassign a const variable?
If you try to reassign a 'const' variable, you'll get a TypeError because 'const' variables cannot be reassigned.
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