CORS request rejected using Firefox (Ubuntu)

Question

I'm getting an error (CORS request rejected: https://localhost:3000/users) when trying register a new user. The example comes from the book Building APIs with node.js, Chapter 12. I'm using Firefox on Ubuntu. I've searched online for away to disable CORS within Firefox but nothing is working. I'm not sure if I should be changing a setting in Firefox or what code I could add to the example code. Please help point me in the right direction.

import NTask from "../ntask.js";
import Template from "../templates/signup.js";

class Signup extends NTask {
  constructor(body) {
    super();
    this.body = body;
  }
  render() {
    this.body.innerHTML = Template.render();
    this.body.querySelector("[data-name]").focus();
    this.addEventListener();
  }
  addEventListener() {
    this.formSubmit();
  }
  formSubmit() {
    const form = this.body.querySelector("form");
    form.addEventListener("submit", (e) => {
      e.preventDefault();
      const name = e.target.querySelector("[data-name]");
      const email = e.target.querySelector("[data-email]");
      const password = e.target.querySelector("[data-password]");
      const opts = {
        method: "POST",
        url: `${this.URL}/users`,
        json: true,
        body: {
          name: name.value,
          email: email.value,
          password: password.value
        }
      };
      this.request(opts, (err, resp, data) => {
        if (err || resp.status === 412) {
          alert("IF: " + err);
          this.emit("error", err);
        } else {
          alert("ELSE")
          this.emit("signup", date);
        }
      });
    });
  }
}

module.exports = Signup;

if you are looking for only disabling in Firefox browser, try CORS disabling firefox extensions — vishnu sandhireddy
– vishnu sandhireddy, Commented Feb 23, 2020 at 3:06
I tried setting security.fileuri.strict_origin_policy to false and installed cors everywhere, neither one worked. — user2827629
– user2827629, Commented Feb 23, 2020 at 3:29

user2827629 · Accepted Answer · 2020-02-23 16:04:55Z

1

I think I found my answer, I skipped chapters 10 & 11, 11 being about CORS in the API (Titled: Preparing the Production Environment).

answered Feb 23, 2020 at 16:04

user2827629

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