Web Scraping
Web scraping is a phrase used to describe looking through HTML source to pick out specific elements. In this example, JavaScript is used to scrape an Amazon page, specified by the user, to track and be reminded of current price and trade-in price of an item.
The algorithm for this scraping is currently young and lacks features. It currently only supports tracking prices for Gamestop and Walmart. The actual tracking algorithm is still in its younger stages