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What is Closure and Hoisting?

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What is Closure and Hoisting?
posted Jun 5, 2014 by Rajneesh

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Closure:

A closure is the local variables for a function - kept alive after the function has returned, or
A closure is a stack-frame which is not deallocated when the function returns. (as if a 'stack-frame' were malloc'ed instead of being on the stack!)

Hoisting:

In Javascript, we have multiple var-statements in a function. All of these statements act as if they were declared at the top of the function. Hoisting is the act of moving the declarations to the top of the function.

answer Jun 6, 2014 by Vrije Mani Upadhyay
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