function squareClick(e) {
  if (!enabled) {
    return;
  }
  // Extract the ID from the parent SVG.
  var svg = e.target.parentNode;
  var i = Number(svg.id.substring(3));
  humanPlay(i);
}
// A blank square was clicked.
A blank square was clicked.
A blank square was clicked .
function squareClick(e) {
  if (!enabled) {
    return;
  }
  var svg = e.target.parentNode;
  var i = Number(svg.id.substring(3));
  humanPlay(i);
}
function squareClick ( e ) { if ( ! enabled ) { return ; } var svg = e . target . parentNode ; var i = Number ( svg . id . substring ( 3 ) ) ; humanPlay ( i ) ; }
A blank square was clicked.
A blank square was clicked .
// Extract the ID from the parent SVG.