d3-brush click behaviour

HTML

<script src="https://d3js.org/d3.v4.js"></script>
<svg>
  <rect x="0", y="0", width="200", height="200"fill="white"></rect>
  <g id="brushGroup">
  </g>
</svg>

JavaScript

var brush = d3.brushX().extent([
  [0, 0],
  [200, 200]
]);
d3.select(document.getElementById("brushGroup")).call(brush);