D3.js Selection Conditional Rendering

Using the d3js join model, is it possible to do conditional rendering based on the data content? I want to do something like this: var nodes = svg.selectAll('.node').data(nodes);

Solution 1:

You could use a filter:

var nodes = svg.selectAll('.node').data(nodes);

nodes.enter()
  .insert('svg:g')
  .attr('class', 'node');

nodes.filter(function(d,i){
  return d.hasDuration;
}).append('svg:rect');

nodes.filter(function(d,i){
  return !d.hasDuration;
}).append('svg:circle');

Example here.