Blockchain Development for Finance Projects

Creating a method to set the timer interval

The startTimer method sets the timer interval that calls the hashread method every 5 seconds to see whether there is a mismatch between the MTH and FTH hashes recorded in the blockchain and the current MTH and FTH hashes:

1. The method checks whether the tflag state variable is set to true. You might remember that this value is set to true in the constructor. This is to avoid multiple firing when the app is rendered multiple times because of changes in state:

startTimer = () =>{ if(this.state.tflag == true) { console.log ("Started Timer"); this.intervalHandle = setInterval(this.pathCheck,5000);

2. The interval set is intervalHandle. It calls the pathCheck method every 5 seconds (5,000 milliseconds). ...