JAVASCRIPT
Variable Scope
Article by:Geoffrey Hunter
Date Published: | |
Last Modified: |
Overview
Variable scope is a way to determining the lifespan of a variable in code.
Function Scope
Function scope is given to a JavaScript variable with the var keyword.
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The above myVar
variable cannot be accessed outside of the function myFunc()
.
Block Scope
As of EMCAScript 2015, JavaScript has block scoping capabilities. This is enabled with the introduction of the let
keyword.
Authors

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