Utility functions for parsing querystrings and other useful JS goodies

Utils.ts

/** Returns the first querystring parameter with the given key, or null if not found. */
export function getParam(param: string): string|null {
  var dataCallbackMatches = new RegExp(param + '=([^&]+)').exec(document.location.href);
  if (dataCallbackMatches) {
    return dataCallbackMatches[1];
  } else {
    return null;
  }
};