How do i read only value attr?

Question

I want make value attribute to read-only and i do these code but not work ??

Need help ?

const obj = {
  name: "karl"
}
const origName = obj.name;
Object.defineProperty(obj, 'name', {
  enumerable: false,
  configurable: false,
  get() {
    return origName + 2;
  }
});

Answer 1

You must add "writebale" key; Like this;

 Object.defineProperty(obj, "name", {
        value: "karl",
        writable: false
    });