const should always be used when you don’t need to change the value, and if that’s not possible, let should be used, but not var.
const
let
var
There are some edge cases where var is the only option, but you should avoid that.
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constshould always be used when you don’t need to change the value, and if that’s not possible,letshould be used, but notvar.There are some edge cases where
varis the only option, but you should avoid that.