How to draw a *simple* line segment with d3.js?

Question

In the documentation for d3.js I cannot find a straightforward way to draw a simple line segment between two points. The only way I can find there to do this is on

Answer 1

Simplest is:

d3.select('svg')
  .append('path')
  .attr({
    d: "M0,0L200,200"
    stroke: '#000'
  });

This is not too bad:

var simpleLine = d3.svg.line()
d3.select('svg')
  .append('path')
  .attr({
    d: simpleLine([[0,0],[200,200]]),
    stroke: '#000'
  });

Still....

Dunno if this is simpler, but it's maybe more direct:

d3.select('svg')
  .append('line')
  .attr({
    x1: 0,
    y1: 0,
    x2: 200,
    y2: 200,
    stroke: '#000'
  })

(All three examples draw a line from 0,0 to 200,200)