Watching Live Events and Updating UI

This lesson is for enrolled learners

The Concept: From Polling to Event Listeners When you build a traditional web app, you poll a database: "Give me all orders created in the last hour." You run a query, get a snapshot, and move on. But blockchains are append-only ledgers; new blocks arrive every 12 seconds on Ethereum. If you want your dApp to react instantly when a……

Enroll to continue Already enrolled? Sign in