vue-socials/dist/esm/utils/jsonp.js

Social media share buttons and counts for Vue.js

/**
 * Simple implementation of JSONP.
 * It creates window.callbackRegistry to minimize global window pollution.
 * It uses callback to prevent adding the promise polyfill.
 */
function JSONP(url, callback, callbackName) {
  var script = document.createElement('script');
  var cbName = callbackName || 'callback';

  if (callback) {
    if (!window.callbackRegistry) {
      window.callbackRegistry = {};
    }

    var _key = "cb".concat(String(Math.random()).slice(-6));

    script.src = "".concat(url).concat(url.indexOf('?') === -1 ? '?' : '&').concat(cbName, "=callbackRegistry.").concat(_key);

    script.onerror = function JSONPOnError() {
      delete window.callbackRegistry[_key];
      callback(new Error(), null);
    };

    window.callbackRegistry[_key] = function JSONPCallback(response) {
      delete window.callbackRegistry[_key];
      callback(null, response);
    };
  } else {
    script.src = url;
  }

  document.head.removeChild(document.head.appendChild(script));
}

export default JSONP;