const
A keyword that declares a block-scoped variable that can't be given a new value.
What is const in JavaScript?
const — A keyword that declares a block-scoped variable that can't be given a new value. An object or array it holds can still change.
const taxRate = 0.08;
taxRate = 0.1; // TypeError: Assignment to constant variable.
const cart = [];
cart.push("coffee"); // allowed: the array changes, the variable doesn't
Level: Novice · More JavaScript terms at this level
Updated