Function isId

javascript/selenium-webdriver/lib/webelement.js:35–37

* @param {?} obj the object to test. * @return {boolean} whether the object is a valid encoded WebElement ID.

(obj)

 * @return {boolean} whether the object is a valid encoded WebElement ID.
 */
function isId(obj) {
  return isObject(obj) && (typeof obj[ELEMENT_ID_KEY] === 'string' || typeof obj[LEGACY_ELEMENT_ID_KEY] === 'string')
}

/**
 * Extracts the encoded WebElement ID from the object.