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Discussion on: Demystifying "const" variables in JavaScript

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cecilelebleu profile image
Cécile Lebleu

As a common rule, I suggest using const to declare all new variables, and when you come across a point where you need to reassign one of those variables, then change it to a let.

Great explanation! I will definitely be trying this, as I have always been confused about const and when to use it. But looking at it “upside down” is a great approach. Thanks!

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jckuhl profile image
Jonathan Kuhl

It's always been my rule of thumb.

Use const. If you need to reassign it, change the variable to let. No reason to use var anymore.

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adam_cyclones profile image
Adam Crockett

One reason to use var: prototype something in the browser console and get something wrong, for that session your const won't be changeable, so use var for fast prototyping