图表饼状图、柱状图、线形图 js插件

第一步引入bfwone
第二步执行插件方法
示例如下
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>BFWONE.JS DEMO PAGE</title>
    <script id="bfwone" src="//repo.bfw.wiki/bfwrepo/js/bfwone.js"></script>
    <style>
        canvas {
            -moz-user-select: none;
            -webkit-user-select: none;
            -ms-user-select: none;
        }
    </style>
    <script>
        bready(function() {
            use(["Chart.min"]);
            use(["chart.utils"]);
            var MONTHS = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'];
            var color = Chart.helpers.color;
            var barChartData = {
                labels: ['January', 'February', 'March', 'April', 'May', 'June', 'July'],
                datasets: [{
                    label: 'Dataset 1',
                    backgroundColor: color(window.chartColors.red).alpha(0.5).rgbString(),
                    borderColor: window.chartColors.red,
                    borderWidth: 1,
                    data: [
                        randomScalingFactor(),
                        randomScalingFactor(),
                        randomScalingFactor(),
                        randomScalingFactor(),
                        randomScalingFactor(),
                        randomScalingFactor(),
                        randomScalingFactor()
                    ]
                }, {
                    label: 'Dataset 2',
                    backgroundColor: color(window.chartColors.blue).alpha(0.5).rgbString(),
                    borderColor: window.chartColors.blue,
                    borderWidth: 1,
                    data: [
                        randomScalingFactor(),
                        randomScalingFactor(),
                        randomScalingFactor(),
                        randomScalingFactor(),
                        randomScalingFactor(),
                        randomScalingFactor(),
                        randomScalingFactor()
                    ]
                }]

            };

            window.onload = function() {
                var ctx = document.getElementById('canvas').getContext('2d');
                window.myBar = new Chart(ctx, {
                    type: 'bar',
                    data: barChartData,
                    options: {
                        responsive: true,
                        legend: {
                            position: 'top',
                        },
                        title: {
                            display: true,
                            text: 'Chart.js Bar Chart'
                        }
                    }
                });

            };

            document.getElementById('randomizeData').addEventListener('click', function() {
                var zero = Math.random() < 0.2 ? true: false;
                barChartData.datasets.forEach(function(dataset) {
                    dataset.data = dataset.data.map(function() {
                        return zero ? 0.0: randomScalingFactor();
                    });

                });
                window.myBar.update();
            });

            var colorNames = Object.keys(window.chartColors);
            document.getElementById('addDataset').addEventListener('click', function() {
                var colorName = colorNames[barChartData.datasets.length % colorNames.length];
                var dsColor = window.chartColors[colorName];
                var newDataset = {
                    label: 'Dataset ' + (barChartData.datasets.length + 1),
                    backgroundColor: color(dsColor).alpha(0.5).rgbString(),
                    borderColor: dsColor,
                    borderWidth: 1,
                    data: []
                };

                for (var index = 0; index < barChartData.labels.length; ++index) {
                    newDataset.data.push(randomScalingFactor());
                }

                barChartData.datasets.push(newDataset);
                window.myBar.update();
            });

            document.getElementById('addData').addEventListener('click', function() {
                if (barChartData.datasets.length > 0) {
                    var month = MONTHS[barChartData.labels.length % MONTHS.length];
                    barChartData.labels.push(month);

                    for (var index = 0; index < barChartData.datasets.length; ++index) {
                        // window.myBar.addData(randomScalingFactor(), index);
                        barChartData.datasets[index].data.push(randomScalingFactor());
                    }

                    window.myBar.update();
                }
            });

            document.getElementById('removeDataset').addEventListener('click', function() {
                barChartData.datasets.pop();
                window.myBar.update();
            });

            document.getElementById('removeData').addEventListener('click', function() {
                barChartData.labels.splice(-1, 1); // remove the label first

                barChartData.datasets.forEach(function(dataset) {
                    dataset.data.pop();
                });

                window.myBar.update();
            });


        });
    </script>
</head>
<body>
    <div id="container" style="width: 75%;">
        <canvas id="canvas"></canvas>
    </div>
    <button id="randomizeData">Randomize Data</button>
    <button id="addDataset">Add Dataset</button>
    <button id="removeDataset">Remove Dataset</button>
    <button id="addData">Add Data</button>
    <button id="removeData">Remove Data</button>

</body>
</html>