What is hoisting in JavaScript?
An example of an AI chatbot conversation about hoisting in JavaScript.
What is hoisting in JavaScript?
Hoisting is a JavaScript mechanism where variables and function declarations are moved to the top of their containing scope during compilation.
Can you give me an example of hoisting?
Sure! For example, if you declare a variable using var and try to use it before its declaration, it will be undefined instead of throwing an error.
What happens with let and const in hoisting?
With let and const, the variables are hoisted but remain in a 'temporal dead zone' until their declaration is encountered, leading to a ReferenceError if accessed before.
Is hoisting the same for functions?
Yes, function declarations are fully hoisted, meaning you can call a function before its declaration in the code.
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