ChartJS 2, Variable number of Bars

In the next Chart implementation there are several features worth knowing.

1) Hidden yAxes line
2) Two line xAxes (Array)
3) Variable width depending on the number of visible bars.

Canvas based bar graphics

ChartJS 2 is an open source highly customizable Graphics Library for JavaScript.
Here I include an example to achieve this bar chart:

HTML;

<div class="jsBarGraphDiv" data-bardata="95,50,95,50,50,10" data-colors="#F44133,#FFC300,#4BB04F" 
   data-labels="Jul,Ago,Set,Out,Nov,Dec">
  <canvas height="215" id="barCanvas"></canvas>
</div>

JavaScript:

Just instance this class:

function BarChart(pSettings) {
    var data = {
        labels: [],
        datasets: [{
            type: 'bar',
            backgroundColor: [],
            data: []
        }]
    },
        config = {
            type: 'bar',
            data: {},
            options: {
                responsive: true,
                maintainAspectRatio: false,
                legend: {
                    display: false
                },
                title: {
                    display: false,
                },
                tooltips:
                {
                    enabled: false
                },
                scales: {
                    xAxes: [{
                        barThickness: 14,
                        gridLines: {
                            display: false
                        },
                        ticks: {
                            maxRotation: 0
                        }
                    }],
                    yAxes: [{
                        scaleLabel: {
                            display: true,
       labelString: 'Baixo         Médio         Alto'
                        },
                        gridLines: {
                            drawTicks: true
                        },
                        ticks: {
                            beginAtZero: true,
                            min: 0,
                            max: 100,
                            stepSize: 34,
                            callback: function () {
                                return '';
                            }
                        }
                    }]
                }
            }
        },
        settings = {
            BarGraphDiv: '.jsBarGraphDiv'
        },
        options = {},
            aColors = [];
    //
    function init(pSettings) {
        options = $.extend(settings, pSettings || {});
        var _$BarGraphDiv = $(options.BarGraphDiv),
            _graphData = _$BarGraphDiv.data('bardata');
        if (_graphData) {
            if (typeof _graphData == 'number') {
                _graphData = [_graphData];
                data.labels = [_$BarGraphDiv.data('labels')];
            }
            else {
                _graphData = _graphData.split(',');
                _graphData = _graphData.map(function (el) { return Number(el) });
                data.labels = _$BarGraphDiv.data('labels').split(',');
            }
            aColors = _$BarGraphDiv.data('colors').split(',');            
            data.datasets[0].backgroundColor = _graphData.map(function (el, i) {
                return aColors[Math.floor(el / 33.4)];
            });
            data.datasets[0].data = _graphData;
            config.data = data;
            var ctx = $(options.BarGraphDiv).find('canvas')[0].getContext('2d');
            new Chart(ctx, config);
            var _cssLowMidHigh = ['low', 'mid', 'high'][Math.floor(_graphData[_graphData.length - 1] / 33.4)];
            _$BarGraphDiv.addClass(_cssLowMidHigh);
        }
    }
    //
    init(pSettings);
}

Animated scroll to a certain point of the web page.

Just add the next code:

$('html,body').animate({ scrollTop: _top }, 1000, 'swing');

Reference: http://api.jquery.com/animate/