Once the funding goal is reached, the crowdfunding owner will collect of the all funds by running the checkGoalReached method.

The HTML is just a simple button, as shown in the following code:

<button type="button" id="checkGoal" class="btn btn-success">CheckGoal</button>

Similar to the fund function, we call the smart contract in JavaScript using the following code:

instance.checkGoalReached({ from: selectAcct, gas:3500000});

Here is the detailed logic:

  handleCheckGoal: function(event) {
    event.preventDefault();
    $("#displayMsg").html("");
    var selectAcct = $('#accts').find(":selected").val();
    App.contracts.CrowdFunding.deployed().then(function(instance) {
      return instance.checkGoalReached({ from: selectAcct, gas:3500000});
    }).then(function(result) {
      App.loadProject();
    }).catch(function(err) {
      console.error(err);
      $("#displayMsg").html(err);
    });
  },

The result will display as follows:

If you followed the whole example and run this step, congratulations! You are now able to write and run a crowdfunding DApp.