What is the difference between hoisting and the temporal dead zone?
An example of an AI chatbot conversation about hoisting and the temporal dead zone in JavaScript.
Can you explain the difference between hoisting and the temporal dead zone?
Sure! Hoisting is a JavaScript mechanism where variables and function declarations are moved to the top of their containing scope during compilation.
What about the temporal dead zone?
The temporal dead zone (TDZ) refers to the period from the start of a block until the variable is declared, where accessing it results in a ReferenceError.
So, can I access a variable before it's declared?
You can access variables declared with var before their declaration due to hoisting, but accessing let or const variables before declaration will throw an error.
What are some examples of hoisting in code?
An example of hoisting is when you declare a variable with var and use it before the declaration. It will be undefined, not an error.
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