Reacts Facebook login - using ES6 - facebook

Question

Having looked at this: Implement Facebook API login with reactjs
I am trying to create a Reactjs component for Facebook login.
I am using ES6 and I keep getting: "Cannot read property 'parentNode' of undefined"
Code:
'use strict';
import React from 'react';
import addons from 'react/addons'
export default class Login extends React.Component {
constructor(props) {
super(props);
this.handleClick = this.handleClick.bind(this);
this.checkLoginState = this.checkLoginState.bind(this);
this.statusChangeCallback = this.statusChangeCallback.bind(this);
this.testAPI = this.testAPI.bind(this);
}
render() {
return (
<div class="fb-login-button" data-max-rows="1" data-size="medium" data-show-faces="false" data-auto-logout-link="false"></div>
);
} // Render
componentDidMount() {
window.fbAsyncInit = function() {
FB.init({
appId : 'xxx',
cookie : true, // enable cookies to allow the server to access
// the session
xfbml : true, // parse social plugins on this page
version : 'v2.3' // use version 2.1
});
// Now that we've initialized the JavaScript SDK, we call
// FB.getLoginStatus(). This function gets the state of the
// person visiting this page and can return one of three states to
// the callback you provide. They can be:
//
// 1. Logged into your app ('connected')
// 2. Logged into Facebook, but not your app ('not_authorized')
// 3. Not logged into Facebook and can't tell if they are logged into
// your app or not.
//
// These three cases are handled in the callback function.
FB.getLoginStatus(function(response) {
this.statusChangeCallback(response);
}.bind(this));
}.bind(this);
// Load the SDK asynchronously
(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.src = "//connect.facebook.net/en_US/sdk.js";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));
}
// Here we run a very simple test of the Graph API after login is
// successful. See statusChangeCallback() for when this call is made.
testAPI() {
console.log('Welcome! Fetching your information.... ');
FB.api('/me', function(response) {
console.log('Successful login for: ' + response.name);
document.getElementById('status').innerHTML =
'Thanks for logging in, ' + response.name + '!';
});
}
// This is called with the results from from FB.getLoginStatus().
statusChangeCallback(response) {
console.log('statusChangeCallback');
console.log(response);
// The response object is returned with a status field that lets the
// app know the current login status of the person.
// Full docs on the response object can be found in the documentation
// for FB.getLoginStatus().
if (response.status === 'connected') {
// Logged into your app and Facebook.
this.testAPI();
} else if (response.status === 'not_authorized') {
// The person is logged into Facebook, but not your app.
document.getElementById('status').innerHTML = 'Please log ' +
'into this app.';
} else {
// The person is not logged into Facebook, so we're not sure if
// they are logged into this app or not.
document.getElementById('status').innerHTML = 'Please log ' +
'into Facebook.';
}
}
// This function is called when someone finishes with the Login
// Button. See the onlogin handler attached to it in the sample
// code below.
checkLoginState() {
FB.getLoginStatus(function(response) {
this.statusChangeCallback(response);
}.bind(this));
}
handleClick() {
FB.login(this.checkLoginState());
}
} // Component
Any idea?
Thanks

Answer 1

Found the solution.
You have to add at least: <script></script> in your template, outside your component.
This error is caused because the code trying to do something with <script> but he can't found it.

Answer 2

On the second line of the code snippet below, the variable fjs is being initialized to an undefined value, which is then references in fjs.parentNode.
// Load the SDK asynchronously
(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
// ... code ...
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));