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Sep 13, 2018

Goodbye var: JavaScript ES6 variable declarations with let and const


Everyone in the JavaScript world is talking about ECMAScript 6 (ES6, a.k.a. ES 2015) and the big changes coming to objects (class, super(), etc), functions (default params, etc), and modules (import/export), but less attention is being given to variables and how they are declared. In this article I wanted to cover these two new keywords for declaring variables and differentiate them from var.




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