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
    });

Answer 2

You could instead use the writable property of the property descriptor, which prevents the need for a get accessor:

 Object.defineProperty(obj, 'name', { value: "karl", writable: false get() { return origName + 2; } });