QABattle

Selenium / Quiz

Await Everything: Promises in the JS Bindings

Every WebDriver command returns a promise, and every forgotten await is a race. The habits that keep Node Selenium deterministic.

Difficulty
Easy
Format
Quiz
Points
100
Estimate
8 min

// MISSION BRIEF

Your Mission

In the JavaScript bindings there is no synchronous option and no magic queue: driver.get, findElement, click, getText, all return promises, and the browser does not wait for your next line.

This quiz drills the async discipline: what a missing await actually does, promise-vs-value assertions, runner timeouts, and why you cannot parallelize commands on one session.

Speed bonus active.

// FIRST CONTACT

Battle teaser

In selenium-webdriver for Node, driver.findElement(By.id('save')) returns:

  1. AA promise resolving to a WebElement (rejecting with NoSuchElementError if absent), so callers must await it before using the element
  2. BA CSS selector string for later use
  3. CThe WebElement synchronously, like the Java bindings
  4. DA boolean indicating whether the element exists
Answers, scoring, hints, and the full battle stay sealed.

// SKILL TAGS

seleniumjavascriptasyncpromisesflakiness