JSFiddle - React, Tailwind, and code Playground

by Ragu Nathan

HTML

<script src="https://canvasjs.com/assets/script/canvasjs.min.js"></script>
<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
    
  <div id="chartContainer" style="height: 300px; width: 100%;"></div>

JavaScript

var chart = new CanvasJS.Chart("chartContainer",
        {        
            axisX:{
                minimum: 5,
                maximum: 95
            },
            axisY: [{
                title: "Prices",
                prefix: "$ "
            }],
            title: {
                text: "Try dragging to reposition dataPoint",
            },
            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 }
                ]
            }                   
            ]
        });

        chart.render();

        // var xSnapDistance = chart.axisX[0].convertPixelToValue(chart.get("dataPointWidth")) / 2;
        var xSnapDistance = 2;
        var ySnapDistance = 3;

        var xValue, yValue;

        var mouseDown = false;
        var selected = null;
        var changeCursor = false;
        
        var timerId = null;

        function getPosition(e) {
            var parentOffset = $("#chartContainer > .canvasjs-chart-container").offset();          	
            var relX = e.pageX - parentOffset.left;
            var relY = e.pageY - parentOffset.top;
            xValue = Math.round(chart.axisX[0].convertPixelToValue(relX));
            yValue = Math.round(chart.axisY[0].convertPixelToValue(relY));
        }
        
        function searchDataPoint() {
            var dps = chart.data[0].dataPoints;
            for(var i = 0; i < dps.length; i++ ) {
                if( (xValue >= dps[i].x - xSnapDistance && xValue <= dps[i].x + xSnapDistance) && 
                (yValue >= dps[i].y - ySnapDistance && yValue <= dps[i].y + ySnapDistance) ) {
                    if(mouseDown) {
                        selected = i;
    ...