Solidity event listener

Question

This web3js event listener is part of a Voting Dapp. The listener listens for a transactions and re-renders the page to show updates.

listenForEvents: function() {
App.contracts.Election.deployed().then(function(instance) {

  instance.votedEvent({}, {
    fromBlock: 0,
    toBlock: 'latest'

  }).watch(function(error, event) {
    console.log("event triggered", event)
    // Reload when a new vote is recorded
    App.render();
  });
});
},

Even after a lot of searches,i cannot find an explanation for the part

{
    fromBlock: 0,
    toBlock: 'latest'
}

I think this part is causing to render the app in loop. Event declaration is like

event votedEvent (uint indexed _candidateId); 

The statement that calls the event is

votedEvent(_candidateId);

Any links or topics to search for will be helpfull.Thanks in advance :-)

Answer 1

Removing App.render(); solved for me. Because we render the app while initialising the solidity class.