echarts条形图添加滚动条

效果展示:
在这里插入图片描述
测试数据:

taskList:[{majorDeptName:'测试',finishCount:54,notFinishCount:21},
{majorDeptName:'测试',finishCount:54,notFinishCount:21},
{majorDeptName:'测试',finishCount:54,notFinishCount:21},
{majorDeptName:'测试',finishCount:54,notFinishCount:21},
{majorDeptName:'测试',finishCount:54,notFinishCount:41},
{majorDeptName:'测试',finishCount:54,notFinishCount:41},
{majorDeptName:'测试',finishCount:54,notFinishCount:41},
{majorDeptName:'测试',finishCount:54,notFinishCount:41},
{majorDeptName:'测试',finishCount:54,notFinishCount:41},]

代码如下:

   initBarchart(){this.barChart = this.$echarts.init(this.$refs.barChart);let finishData = [];let unFinishData = []let chartName = [];if (  this.taskList && this.taskList.length > 0) {this.taskList.forEach(item => {chartName.push(item.majorDeptName)  finishData.push(item.finishCount)unFinishData.push(item.notFinishCount)})}let max = Math.max.apply(null,finishData.concat(unFinishData));let emptyData = finishData.map(function(v, i) {let item = {value: max,label: {   formatter: '{a|' + v + '}',position: 'right',rich: {a: {color:'#BFF4FF',fontSize:14,padding:[5, 10]}}}}return item});let emptyData2 = unFinishData.map(function(v, i) {let item = {value: max,label: {  formatter: '{a|' + v + '}',position: 'right',rich: {a: {color:'#BFF4FF',fontSize:14,padding:[5, 10]}}}}return item});
const barGap = '80%'let option = {tooltip: {show: true,trigger: 'item',},legend: {data: ['已完成','未完成'],right:'5%',//  itemWidth:15, textStyle:{color:'#fff'},},grid: {top: '10%',right: '15%',left: '10%',bottom: '5%',containLabel: true    },xAxis: [{type : 'value',position: 'top',name: '/个',axisLabel:{      //坐标轴字体颜色show:false,},axisLine:{show:false,lineStyle: {color: "#218BA0",}},axisTick:{       //y轴刻度线show:false},splitLine:{    //网格show: false,},max: function(value) {return value.max},}],yAxis: [{type: 'category',data:chartName,inverse: true,axisTick:{       //y轴刻度线show:false,},axisLabel: {formatter: '{value}',color: '#218BA0',fontSize:14},axisLine: {show:false,},splitLine: {show:false},},{type: "category",name: "",axisTick: {show: false,},splitLine: {show: false},axisLabel: {show: false,},axisLine: {show: false},inverse: true,data: chartName}],series: [{type: 'bar',show: true,barWidth: '18%',yAxisIndex: 0,barGap,silent:true,itemStyle: {normal: {color: '#11353d',}},label: {show:true,},data: emptyData},{show: true,type: 'bar',barGap,yAxisIndex: 1,barWidth: '18%',name:'已完成',z: 2,label: {show: false,},itemStyle: {normal: {color: '#03bae2',barBorderRadius: [0,0],}},data: finishData,},{type: 'bar',show: true,           barWidth: '18%',barGap,yAxisIndex: 0,silent:true,itemStyle: {normal: {color: '#11353d',barBorderRadius: [0,0],}},label: {show:true,},data: emptyData2},{show: true,type: 'bar',barWidth: '18%',barGap,yAxisIndex: 1,name:'未完成',z: 2,label: {show: false,},itemStyle: {normal: {color:'#e27903' ,barBorderRadius: [0,0],}},data: unFinishData,}],dataZoom: [{yAxisIndex:[0,1],//这里是从X轴的0刻度开始show: false,//是否显示滑动条，不影响使用weight:2,type: 'inside', // 这个 dataZoom 组件是 slider 型 dataZoom 组件startValue: 0,endValue: 3, zoomOnMouseWheel: false,  // 关闭滚轮缩放moveOnMouseWheel: true, // 开启滚轮平移moveOnMouseMove: true  // 鼠标移动能触发数据窗口平移 },{yAxisIndex: [0,1],//这里是从X轴的0刻度开始show: false,//是否显示滑动条，不影响使用type: 'slider', // 这个 dataZoom 组件是 slider 型 dataZoom 组件fillerColor: "#0089d1", // 滚动条颜色borderColor: "rgba(17, 100, 210, 0.1)",zoomLock:true, // 是否只平移不缩放handleSize:10, // 两边手柄尺寸width:8,heigh:8,bottom: 2,backgroundColor: 'rgba(255,255,255,.4)',brushSelect:false,showDetail:false,showDataShadow:false}],};if (  this.taskList && this.taskList.length > 4) {option.dataZoom[0].show = trueoption.dataZoom[1].show = true}this.barChart.setOption(option)},