test/bar-tooltip-performance.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>


        <script>
        require([
            'echarts',
            // 'map/js/china',
            // './data/nutrients.json'
        ], function (echarts) {
            var option;

            option = {
                legend: {},
                tooltip: {
                    axisPointer: {
                        type: 'shadow'
                    },
                    showContent: true,
                    trigger: 'axis'
                },
                animation: false,
                xAxis: {
                    data: []
                },
                yAxis: {},
                series: []
            };

            const nameCache = {};
            const dataCount = 700;
            function generateRandomName() {
                let str = '';
                for (let i = 0; i < 4; i++) {
                    str += String.fromCharCode(65 + Math.round((90 - 65) * Math.random()));
                }
                if (nameCache[str]) {
                    return generateRandomName();
                }
                nameCache[str] = true;
                return str;
            }

            for (let i = 0; i < 100; i++) {
                let value = Math.random();
                const data = [];
                const increase = Math.random() * (i / 10 + 1);
                for (let k = 0; k < dataCount; k++) {
                    data.push(value);
                    value += Math.random() * increase - increase * 0.499;
                }
                option.series.push({
                    name: generateRandomName(),
                    type: 'bar',
                    stack: 'all',
                    large: true,
                    data
                })
            }

            for (let i = 0; i < dataCount; i++) {
                option.xAxis.data.push('CAT' + i);
            }

            var chart = testHelper.create(echarts, 'main0', {
                title: [
                    'Tooltip performance test for 70000 data in 100 series',
                    'See https://github.com/apache/echarts/issues/16133'
                ],
                option: option,
                height: 600,
                // buttons: [{text: 'btn-txt', onclick: function () {}}],
                // recordCanvas: true,
            });
        });
        </script>


    </body>
</html>