jsonp demo

jsonpdemo.py

import json
from flask import Flask
from flask import request
app = Flask(__name__)
app.debug = True
@app.route('/')
def hello_world():
    callback = request.args.get('jsoncallback')
    data = {"hello":"world"}
    if callback:
        return callback + '(' + json.dumps(data) + ')'
    else:
        return json.dumps(data)

if __name__ == '__main__':
    app.run()

Code js for testing :

$.getJSON("http://localhost:5000/?jsoncallback=?",
  function(data){console.log(data.hello)}
);