Fire mouseover event for nearest dataPoint - CanvasJS JavaScript Charts
Fire mouseover event for nearest dataPoint - CanvasJS JavaScript Charts
HTML
<script src="https://canvasjs.com/assets/script/canvasjs.min.js"></script>
<br/><!-- Just so that JSFiddle's Result label doesn't overlap the Chart -->
<div id="chartContainer" style="height: 360px; width: 100%;"></div>
JavaScript
var chart = new CanvasJS.Chart("chartContainer",
{
data: [
{
type: "line",
dataPoints: [
{ x: 10, y: 71 },
{ x: 20, y: 55 },
{ x: 30, y: 50 },
{ x: 40, y: 65 },
{ x: 50, y: 95 },
{ x: 60, y: 68 },
{ x: 70, y: 28 },
{ x: 80, y: 34 },
{ x: 90, y: 14 }
]
}],
axisX: {
crosshair: {
enabled: true,
snapToDataPoint: true
}
}
});
chart.render();
$(".canvasjs-chart-canvas").last().on("mousemove",
function(e){
var parentOffset = $(this).parent().offset();
var relX = e.pageX - parentOffset.left;
var xValue = Math.round(chart.axisX[0].convertPixelToValue(relX));
var interval = chart.axisX[0].interval;
xValue = xValue < chart.axisX[0].minimum ? chart.axisX[0].minimum : xValue > chart.axisX[0].maximum ? chart.axisX[0].maximum : xValue;
var selectedValue = Math.round(xValue / interval) * interval;
console.log(selectedValue);
});