动态更新echart成交量柱状图，并且不重绘，类似K线的更新方式

    function setoption(data) {        let dataVolume=volumeChartData;        var option = {            title: {                text: ‘成交量‘,//                subtext: ‘纯属虚构‘            },            tooltip: {                trigger: ‘axis‘            },            legend: {                data:[‘最新成交价‘]            },//            toolbox: {//                show: true,//                feature: {//                    dataView: {readOnly: false},//                    restore: {},//                    saveAsImage: {}//                }//            },            toolbox: {                show: false,            },            grid: {                left: ‘5px‘,                right: ‘5px‘,                top: ‘10px‘,                bottom: ‘10px‘,                containLabel: true            },            dataZoom: [{                textStyle: {                    color: ‘#8392A5‘                },//增加这个代码，就能和K线一样的更新数据                handleIcon: ‘M10.7,11.9v-1.3H9.3v1.3c-4.9,0.3-8.8,4.4-8.8,9.4c0,5,3.9,9.1,8.8,9.4v1.3h1.3v-1.3c4.9-0.3,8.8-4.4,8.8-9.4C19.5,16.3,15.6,12.2,10.7,11.9z M13.3,24.4H6.7V23h6.6V24.4z M13.3,19.6H6.7v-1.4h6.6V19.6z‘,                handleSize: ‘80%‘,                dataBackground: {                    areaStyle: {                        color: ‘#8392A5‘                    },                    lineStyle: {                        opacity: 0.8,                        color: ‘#8392A5‘                    }                },                handleStyle: {                    color: ‘#fff‘,                    shadowBlur: 3,                    shadowColor: ‘rgba(0, 0, 0, 0.6)‘,                    shadowOffsetX: 2,                    shadowOffsetY: 2                }            }, {                type: ‘inside‘            }],//            dataZoom: [////                {////                    show: true,////                    start: 94,////                    end: 100////                },////                {////                    type: ‘inside‘,////                    start: 94,////                    end: 100////                },////                {////                    show: true,////                    yAxisIndex: 0,////                    filterMode: ‘empty‘,////                    width: 30,////                    height: ‘80%‘,////                    showDataShadow: false,////                    left: ‘93%‘////                }//            ],            xAxis: [                {                    type: ‘category‘,                    boundaryGap: true,                    data:dataVolume.time                }            ],            yAxis: [                {                    type: ‘value‘,                    scale: false,                    name: ‘成交量‘,                }            ],            series : [                {                    name: ‘成交量‘,                    type: ‘bar‘,                    data:dataVolume.prices                }            ]        };        return option}