echart tooltip循环显示，legend随tooltip滚动循环显示

偏执的太偏执、 2021-07-26 12:11 769阅读 0赞

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpbWluZzEwMTY_size_16_color_FFFFFF_t_70][]

option = {
        title: {
            text: '饼图程序调用高亮示例',
            left: 'center'
        },
        tooltip: {
            trigger: 'item',
            formatter: '{a} <br/>{b} : {c} ({d}%)'
        },
        legend: {
            id: "stock-model",
            type: 'scroll',
            orient: 'vertical',
            top: 500,
            left: 'left',
            data: ['直接访问', '邮件营销', '联盟广告', '视频广告', '搜索引擎',
            '直接访问2', '邮件营销2', '联盟广告2', '视频广告2', '搜索引擎2'
            ]
        },
        series: [
            {
                name: '访问来源',
                type: 'pie',
                radius: '55%',
                center: ['50%', '60%'],
                data: [
                    {value: 335, name: '直接访问'},
                    {value: 310, name: '邮件营销'},
                    {value: 234, name: '联盟广告'},
                    {value: 135, name: '视频广告'},
                    {value: 1548, name: '搜索引擎'},
                    {value: 335, name: '直接访问2'},
                    {value: 310, name: '邮件营销2'},
                    {value: 234, name: '联盟广告2'},
                    {value: 135, name: '视频广告2'},
                    {value: 1548, name: '搜索引擎2'}
                ],
                emphasis: {
                    itemStyle: {
                        shadowBlur: 10,
                        shadowOffsetX: 0,
                        shadowColor: 'rgba(0, 0, 0, 0.5)'
                    }
                }
            }
        ]
    };
    
    app.currentIndex = -1;
    
    setInterval(function () {
        var dataLen = option.series[0].data.length;
        // 取消之前高亮的图形
        myChart.dispatchAction({
            type: 'downplay',
            seriesIndex: 0,
            dataIndex: app.currentIndex
        });
        app.currentIndex = (app.currentIndex + 1) % dataLen;
        // 高亮当前图形
        myChart.dispatchAction({
            type: 'highlight',
            seriesIndex: 0,
            dataIndex: app.currentIndex
        });
        // 显示 tooltip
        myChart.dispatchAction({
            type: 'showTip',
            seriesIndex: 0,
            dataIndex: app.currentIndex
        });
        
        myChart.dispatchAction({
            type: 'legendScroll',
            scrollDataIndex: app.currentIndex,
            legendId: 'stock-model',
        });
    }, 1000);

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpbWluZzEwMTY_size_16_color_FFFFFF_t_70]: /images/20210726/a2bf65d4e4664ebaa489b26e1ad61255.png