CODEWITHSUNDEEP
javascriptnode.jsreactjsexpressfetch-api
itsame
itsame

Reputation: 181

Unhandled Rejection (TypeError): Failed to fetch (POST) react / node / express

I'm trying to build a Login / Register form with react and node / express / (mongo) as my backend. The backend works fine. When I send a POST request (with postman) to /register, everything works fine and the credentials are stored in the DB.

I tried to implement the form now with react on the client-side, but when I try to POST I always get the error: Unhandled Rejection (TypeError): Failed to fetch.

This is my code:

import React, { Component } from 'react';

class Register extends Component {
  state = { email: '', password: '' };

  handleInputChange = event => {
    const { value, name } = event.target;
    this.setState({
      [name]: value
    });
  };

  onSubmit = event => {
    event.preventDefault();
    fetch('localhost:3000/register', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({
        email: this.state.email,
        password: this.state.password
      })
    });
  };

  render() {
    return (
      <form onSubmit={this.onSubmit} noValidate>
        <h1>Login</h1>
        <input
          type="email"
          name="email"
          placeholder="Enter email"
          value={this.state.email}
          onChange={this.handleInputChange}
        />
        <input
          type="password"
          name="password"
          placeholder="Enter password"
          value={this.state.password}
          onChange={this.handleInputChange}
        />
        <input type="submit" value="Submit" />
      </form>
    );
  }
}

export default Register;

Help would be appreciated:)

Upvotes: 0

Views: 4936

Answers (2)

Marcos Mitozo
Marcos Mitozo

Reputation: 477

In my case, inserting "http://" before "localhost" worked!

onSubmit = event => {
    event.preventDefault();
    fetch('http://localhost:3000/register', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({
        email: this.state.email,
        password: this.state.password
      })
    });
  };

Upvotes: 0

SuleymanSah
SuleymanSah

Reputation: 17858

You need to use then block to actually call your api.

  onSubmit = event => {
    event.preventDefault();
    fetch("localhost:3000/register", {
      method: "POST",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify({
        email: this.state.email,
        password: this.state.password
      })
    })
      .then(res => {
        console.log("response: ", res);
      })
      .catch(err => {
        console.log("error:", err);
      });
  };

Upvotes: 3

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