通过节点中的原型访问变量的值

Question

I'm suppose to access the value of the variable using defined prototype but I don't know how do I get the value by doing this. I search many examples but not get the proper solution.

For clear understanding here is the example.

String.prototype._ = console.log(this);
const a = '10';
a._;

This is the simple one, I didn't get the proper value defined in a . Your help will appreciated.

Answer 1

If I understand correctly, you want a getter on the prototype:

Object.defineProperty(String.prototype, "_", {
  get() {
    console.log(this);
  }
});

 "It works"._;  // logs into the console