Javascript - No 'Access-Control-Allow-Origin' header is present on the requested resource

Question

I need to send data through XmlHttpRequest from JavaScript to Python server. Because I\'m using localhost, I need to use CORS. I\'m using the Flask framework an

Answer 1

I have used the flask-cors extension.

Install using pip install flask-cors

Then it's simply

from flask_cors import CORS
app = Flask(__name__)
CORS(app)

This will allow all domains