var and let are mutable values However, const does not allow reassignment of the reference, nor does it allow the mutation of a primitive.
var and let are mutable values
However, const does not allow reassignment of the reference, nor does it allow the mutation of a primitive.
Actually all promitives are always immutable in JavaScript, whereas referential types are mutable. Mutability in JavaScript is not related to the variable keyword but to the value's type.
The difference between let and const is about reassignability, not mutability.
let
const
Good point I'll update the language around that.
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Actually all promitives are always immutable in JavaScript, whereas referential types are mutable. Mutability in JavaScript is not related to the variable keyword but to the value's type.
The difference between
letandconstis about reassignability, not mutability.Good point I'll update the language around that.