JavaScript const Keyword

Question

Does the const keyword in JavaScript create an immutable reference to immutable data structures? [I\'m assuming that immutable data structures exist in JavaScri

Answer 1

You can create CONST like values using ES5 Object.defineProperty. The crummy part is that it must be bound to an object

CONSTS = {};
Object.defineProperty(CONSTS, 'FOO', {
    value: 'bar'
});

CONSTS.FOO = 'derp' // Will throw error in strict mode
delete CONSTS.FOO // will throw error in strict mode