Node.js中的Object.defineProperty

Question

I am running the following code in a browser console and also with node.js v9.11.1 in the terminal:

let name = {};
Object.defineProperty(name, 'last', {value: 'Doe'});
console.log(name);

The browser console works properly and outputs { last: 'Doe' } . But in the terminal with node.js , it fails and outputs a blank object, {} .

What could be the issue here?

Answer 1

One of the properties of property descriptors is enumerable , which has the default value false . If a property is non-enumerable, Node.js chooses not to display the property, thats it.

You can change that bit and try this

 let name = {}; Object.defineProperty(name, 'last', { value: 'Doe', enumerable: true }); console.log(name);