What is scope hoisting in JavaScript?
An example of an AI chatbot conversation about scope hoisting in JavaScript.
What is scope hoisting in JavaScript?
Scope hoisting refers to the behavior of variable and function declarations being moved to the top of their containing scope during compilation.
Can you give me an example of scope hoisting?
Sure! In JavaScript, if you declare a variable using var inside a function, it gets hoisted to the top of that function's scope.
What happens if I use let or const?
Unlike var, let and const are not hoisted in the same way. They are hoisted but remain in a 'temporal dead zone' until their declaration is encountered.
How does this affect my code?
It can lead to errors if you try to access a let or const variable before its declaration, as it will throw a ReferenceError.
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