JS issues

function getNext() {
    scan = badgeScans[index];
    console.log("got scan " + scan);

    if (scan) {
      var scanAction = svgContainer.selectAll("g")
        .data([scan], function(d){return d.scan_time});

      scanAction.exit().remove();

      var group = scanAction
        .enter()
        .append("g");

      group
        .append('circle')
        .attr('class', 'scan')
        .attr('r', 20)
        .style("fill", function(d){return doorCoords[d.door].fill;});

      group
        .append("text")
        .text(function(d){return d.first_name});
        
      group
        .attr("cx", function(d){
          console.log("entered through door: " + d.door + " at " + d.scan_time);
          return doorCoords[d.door].x;
        })
        .attr("cy", function(d){return doorCoords[d.door].y;})
        .transition()
        .duration(1000)
        .attr("cx", function(d){return compCoords[d.company].x;})
        .attr("cy", function(d){return compCoords[d.company].y;});

      window.setTimeout(getNext, 2000);
      index++;
    };
  };

  getNext();