javascript - How to set multiple attributes with one value function?

Question

Given a datum containing multiple data elements, such as an object or array, is it possible to set multiple attributes on a selection with a single value function?

E.g. something like:

var data = [{ 'x': 10, 'y': 20, 'r': 5 }];
d3.select('body').append('svg').selectAll('circle')
    .data(data)
    .enter().append('circle')
    .attr('cx cy r', function (d) {
        return [d.x, d.y, d.r];
    });

instead of:

var data = [{ 'x': 10, 'y': 20, 'r': 5 }];
d3.select('body').append('svg').selectAll('circle')
    .data(data)
    .enter().append('circle')
    .attr('cx', function (d) {
        return d.x;
    });
    .attr('cy', function (d) {
        return d.y;
    });
    .attr('r', function (d) {
        return d.r;
    });

Answer 1

This is an old post, but I found it while Googling around for an answer. The accepted answer no longer works in D3 v4.0.

Moving forward, you can do the same by using the attrs() method. But attrs() is only supported if you load the optional d3-selection-multi script.

So using the example above, it would look like this in D3 v4.0:

// load d3-selection-multi as separate script
<script src="https://d3js.org/d3-selection-multi.v0.4.min.js"></script>

d3.select('body').append('svg').selectAll('circle')
  .data(data)
  .enter().append('circle')
  .attrs({
    cx: function (d) { return d.x; },
    cy: function (d) { return d.y; },
    r:  function (d) { return d.r; }
  });