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var vs let vs const in JavaScript

Tyler McGinnis on January 01, 2019

In this post you'll learn two new ways to create variables in JavaScript (ES6), let and const. Along the way we'll look at the differences between ...

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Stefan Đokić • Jan 1 '19

The explanation is clear and concise, and the great examples make it easy to read and digest. Loved it, especially the summary at the end! 😄

Anton Korzunov • Jan 2 '19

It's 2019, it's not a good time to compare var and let/const.

What if to compare let, const and Readonly from TS/Flow?

const constVariable: Record<string, any> = {};

constVariable.b = "is it const?";

const reallyConstVariable: Readonly<Record<string, any>> = {};

reallyConstVariable.b = "is it const?";