test/pie-percent.html

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<html>
    <head>
        <meta charset="utf-8">
        <meta name="viewport" content="width=device-width, initial-scale=1" />
        <script src="lib/simpleRequire.js"></script>
        <script src="lib/config.js"></script>
        <script src="lib/jquery.min.js"></script>
        <script src="lib/facePrint.js"></script>
        <script src="lib/testHelper.js"></script>
        <!-- <script src="ut/lib/canteen.js"></script> -->
        <link rel="stylesheet" href="lib/reset.css" />
    </head>
    <body>
        <style>
        </style>



        <div id="main0"></div>
        <div id="main1"></div>
        <div id="main2"></div>




        <script>
        require([
            'echarts'
        ], function (echarts) {
            var option;
            var data = [];
            for (var i = 0; i < 1e3; i++) {
                data.push({
                    name: 'test' + i,
                    value: Math.random() * 1000,
                });
            }
            option = {
                series: {
                    type: 'pie',
                    data: data,
                    percentPrecision: 5,
                    label: {
                        formatter: '{b} {d}%'
                    }
                }
            };

            var chart = testHelper.create(echarts, 'main0', {
                title: [
                    'Test Pie performance'
                ]
            });

            var startTs = performance.now();
            chart.setOption(option);

            chart.on('finished', function () {
                var endTs = performance.now();
                var time = endTs - startTs;
                console.log('Finished in ' + time + 'ms');
                startTs = endTs;
            });
        });
        </script>

        <script>
            require(['echarts'], function (echarts) {
                var option = {
                    tooltip: {
                        trigger: 'item',
                        formatter(params) {
                            return params.name + ': ' + params.percent + '%';
                        }
                    },
                    legend: {
                        data: ['一级', '二级', '三级', '四级', '五级', '六级']
                    },
                    series: {
                        type: 'pie',
                        data: [
                            {
                                name: '一级',
                                value: 77
                            },
                            {
                                name: '二级',
                                value: 1
                            },
                            {
                                name: '三级',
                                value: 0
                            },
                            {
                                name: '四级',
                                value: 0
                            },
                            {
                                name: '五级',
                                value: 0
                            },
                            {
                                name: '六级',
                                value: 0
                            }
                        ],
                        label: {
                            show: true,
                            formatter(val) {
                                return val.name + '：' + val.percent + '%';
                            }
                        },
                        labelLine: {
                            show: true
                        }
                    }
                };

                var chart = testHelper.create(echarts, 'main1', {
                    option,
                    title: [
                        'The percent should be correct after toggling the legend',
                        'Test modified from https://github.com/apache/echarts/issues/17732'
                    ]
                });
            });
            </script>

            <script>
                require(['echarts'], function (echarts) {
                    var option = {
                        tooltip: {
                            trigger: 'item',
                            formatter(params) {
                                return params.name + ': ' + params.percent + '%';
                            }
                        },
                        legend: {
                            data: ['一级', '二级', '三级', '四级', '五级', '六级']
                        },
                        series: {
                            type: 'pie',
                            data: [
                                {
                                    name: '一级',
                                    value: 0
                                },
                                {
                                    name: '二级',
                                    value: 0
                                },
                                {
                                    name: '三级',
                                    value: 0
                                },
                                {
                                    name: '四级',
                                    value: 0
                                },
                                {
                                    name: '五级',
                                    value: 0
                                },
                                {
                                    name: '六级',
                                    value: 0
                                }
                            ],
                            label: {
                                show: true,
                                formatter(val) {
                                    return val.name + '：' + val.percent + '%';
                                }
                            },
                            labelLine: {
                                show: true
                            }
                        }
                    };

                    var chart = testHelper.create(echarts, 'main2', {
                        option,
                        title: [
                            'The percent should be not **`undefined`** when all values are 0',
                        ]
                    });
                });
            </script>

    </body>
</html>