Function constructor method

Question

How can i use this method from my own project/design

Github.prototype.handleErr = function(res) {
  if(!res.ok) {
   throw new Error('Something went wrong!!' + res.status);
  }

  return res;
 }

Inside another method but the same object

const git = new Github();

Github.prototype.getUser = (user) => {
return new Promise((resolve, reject) => {
    // Profile
    fetch(something)
    .then(this.handleErr)
    .then(response => response.json())
    .then(data => resolve(data))
    .catch(err => reject(err));
})

}

it didn't work with this.handleErr

i wanted to make a fetch request and use the git.handleErr() function inside .then() consumer, before handling the data response.

What have you tried and what is the exact issue you're encountering? It's not really clear what you expect this code to do or why your expectations were not met. I think more context would really help clarify what it is you are asking. — Bash, Jun 15 '19 at 20:29
Possible duplicate of [ES6 arrow functions not working on the prototype?](https://stackoverflow.com/questions/31755186/es6-arrow-functions-not-working-on-the-prototype) — str, Jun 16 '19 at 09:10

score 0 · Answer 1 · answered Jun 16 '19 at 09:26

Ok so i figured out. I modified the arrow function syntax

Github.prototype.getUser = (user) => {}

to the normal syntax

Github.prototype.getUser = function(user) {}

Acording to this it was referred as a global/undefined this. so that's why it didn't work in the first instance. Thank you str.

Function constructor method

1 Answers1