What is the difference between hoisting and scope in JavaScript?
An example of an AI chatbot conversation about JavaScript hoisting and scope concepts.
What is the difference between hoisting and scope in JavaScript?
Hoisting is JavaScript's behavior of moving declarations to the top of their containing scope, while scope defines the accessibility of variables.
Can you give me an example of hoisting in action?
Sure! For example, if you declare a variable using var and then try to use it before the declaration, it will be undefined instead of throwing an error.
What about block scope? How does it relate to hoisting?
Block scope, introduced in ES6 with let and const, restricts variable access to the block they are defined in, unlike var, which is function-scoped.
Are there any common pitfalls with hoisting and scope?
Yes, a common pitfall is assuming that variables declared with var are available before their declaration, leading to unexpected undefined values.
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