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Mallory Woods

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Articles

Hoisting in JavaScript

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By Chunlin Wu, John Au-Yeung, Merna Zakaria, Mallory Woods
| The Startup Verified
Hoisting is a JavaScript mechanism where variables and function declarations are moved to the top of their scope before code execution, regardless of whether their scope is global or local. You should note that the hoisting mechanism only moves the declaration. The assignments are left in place. In this article we will talk about: Hoisting variables Hoisting functions Before dive into hoisting you must know undeclared variables do not exist until code assigning them is executed.
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