set prop1(name) {
console.log('Hey there!');
}
Object.defineProperty(obj, 'prop1', {
value: 'secret',
writable: true,
configurable: true,
enumerable: true
});
This call overwrites the prop1 accessor property with a data property. That means the setter is gone.
Now obj.prop1 is just a string "secret" (and later "hello"), so assigning a new value simply sets the value — no function is called.
In addition,
Object.defineProperty()uses the[[DefineOwnProperty]]internal method, instead of[[Set]], so it does not invoke setters, even when the property is already present.
Top comments (1)
Neat how using Object.defineProperty just wipes out the setter like flipping a switch. Makes me wonderhow do you know when to keep a function around and when to just use plain old data?