Let should be used instead of Var

[Invincible-Atlas]

Basically what the title says. In all the examples, var is used to declare variables. However, it is better practice to use let.

[greggman]

it is even better practice to use const instead of let where possible

unfortunately the articles were written before let and const were a thing and I don't have the time to re-write them.

While it might be possible to automate fixing the examples themselves, it's manual work to go fix all the corresponding articles across all languages.

Just replacing var with let won't work because many examples exploit the fact that you can redeclare a variable with var

var offset = 16;

...

var offset = 32;

but you can't do that with let

let offset = 16;

...

let offset = 32;  // error - offset is already declared

So it's not a simple as search and replace🙁

[Invincible-Atlas]

I see how that could be a problem. Maybe a solution would be to have a disclaimer (for lack of a better word) at the start of the first article, stating that it is better to use let and const rather than var with an explanation of the differences between the three.