get-jsonp.js

(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
  typeof define === 'function' && define.amd ? define(factory) :
  (global.getJSONP = factory());
}(this, function () { 'use strict';
  var global = typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : this;
  
  return function getJSONP (url, callback) {
    var dt = new Date();
    var callbackName = 'JSONP_' + Date.parse(dt) + dt.getMilliseconds();
    global[callbackName] = callback;
    var ref = global.document.getElementsByTagName('script')[0];
    var script = global.document.createElement('script');
    script.src = url + (url.indexOf('?') + 1 ? '&' : '?') + 'callback=' + callbackName;
    ref.parentNode.insertBefore(script, ref);
    script.onload = function () {
    delete(global[callbackName]);
      this.remove();
    };
  }
}));