JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://www.flotcharts.org/javascript/jquery.flot.min.js"></script>
<div id="placeholder2" style="width:300px; height:300px"></div>

JavaScript

var myPlot;
$(function () {
    var a1 = [
        [0, 100],
        [1, 200],
        [2, 300],
        [3, 400],
        [4, 500]

    ];
    var a2 = [
        [0, 90],
        [1, 150],
        [2, 250],
        [3, 380],
        [4, 450]
    ];

    //var ticks=[[0,"Overall"],[1,"SEA"],[2,"INDIA"],[3,"NEA"],[4,"PZ"]];
    var data = [{
        label: "Pre Transformation",
        data: a1
    }, {
        label: "Post Transformation",
        data: a2
    }];

    myPlot = $.plot($("#placeholder2"), data, {
        series: {
            bars: {
                show: true,
                barWidth: 0.13,
                order: 1
            }
        },
        xaxis: {
            ticks: [
                [0, "Overall"],
                [1, "SEA"],
                [2, "INDIA"],
                [3, "NEA"],
                [4, "PZ"]
            ]
            //tickLength: 0
        },
        grid: {
            hoverable: true,
            clickable: true

            //mouseActiveRadius: 30  //specifies how far the mouse can activate an item
        },


        valueLabels: {
            show: true
        }

    });

});

var previousPoint = null,
    previousLabel = null;

function showTooltip(x, y, color, contents) {
    $('<div id="tooltip">' + contents + '</div>').css({
        position: 'absolute',
        display: 'none',
        top: y - 40,
        left: x - 120,
        border: '2px solid ' + color,
        padding: '3px',
            'font-size': '9px',
            'border-radius': '5px',
            'background-color': '#fff',
            'font-family': 'Verdana, Arial, Helvetica, Tahoma, sans-serif',
        opacity: 0.9
    }).appendTo("body").fadeIn(200);
}


$("#placeholder2").on("plothover", function (event, pos, item) {
    if (item) {
        if ((previousLabel != item.series.label) || (previousPoint != item.dataIndex)) {
            previousPoint = item.dataIndex;
            previousLabel = item.series.label;
           ...