Referential transparency - means you can't reassign variable.
const a = { x: 1 }; const b = a; a.x = 2; a === b; //true, because it is the same reference
Immutability - means you can't mutate object.
let a = Object.freeze({x : 1}) a.x = 2; a.x === 1; // true, because a is immutable
Are you sure you want to hide this comment? It will become hidden in your post, but will still be visible via the comment's permalink.
Hide child comments as well
Confirm
For further actions, you may consider blocking this person and/or reporting abuse
We're a place where coders share, stay up-to-date and grow their careers.
Referential transparency - means you can't reassign variable.
Immutability - means you can't mutate object.