How do I ensure D3 finishes loading several CSVs before javascript runs?

Question

I\'m loading a CSV of a list of other CSV files into javascript using D3.

When I run the following code, the employees array is still empty by the time it gets

Answer 1

You could use queue.js to collect the results from all the d3.csv calls:

function parseList(filenames){
  var q = queue();
  filenames.forEach(function(d) {
    //add your csv call to the queue
    q.defer(function(callback) {
      d3.csv(d.filename,function(res) { callback(null, res) });
    });
  });

  q.await(restOfCode)
}    

function restOfCode(err, results) {
  //results is an array of each of your csv results
  console.log(results)
}

Answer 2

Your code seems fine. It's just that you're logging employees before the data is ready. But if you console.log it on the last line of parseList you should have it.