src/scripts/views/bar.js
function (e) {
    if (e.index == null) {
      this.hovering = null
    } else {
      this.hovering = this.chart.categoryAxis.data[e.index]
    }
  }
function (e) {
    if (e.index == null) {
      this.hovering = null
    } else {
      this.hovering = this.chart.categoryAxis.data[e.index]
    }
  }
function ( e ) { if ( e . index == null ) { this . hovering = null } else { this . hovering = this . chart . categoryAxis . data [ e . index ] } }
Keep track of which column the cursor is hovered over
Keep track of which column the cursor is hovered over