Function toggleFootnote

scripts/main.js:194–201

(d,i)

  // toggle stickiness
  function toggleFootnote(d,i) {
    d3.event.preventDefault();
    var popup = d3.select(this.parentElement).select(".fn-popup")
    var isStuck = !popup.classed("stick");
    d3.select(this).classed("stick", isStuck);
    popup.classed("stick", isStuck);
    popup.classed("stick") ? showFootnote.call(this) : hideFootnote.call(this)
  }

}