学习使用echats因xAxis值过多，可以滚动的柱状图解决方案

本文主要是介绍学习使用echats因xAxis值过多，可以滚动的柱状图解决方案，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

效果图

柱状图代码

function echarts() {// 基于准备好的dom，初始化echarts实例var myChart = echarts.init(document.getElementById('echart4'));let xaxisData = ['1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13', '14', '15', '16', '17', '18', '19', '20', '21', '22', '23', '24', '25', '26', '27', '28', '29', '30'];let option = {tooltip: {trigger: 'axis',axisPointer: {lineStyle: {color: '#57617B'}}},"legend": {"data": [{"name": "2023年"},{"name": "2024年"},{"name": "完成率"}],"top": "0%","textStyle": {"color": "rgba(255,255,255,0.9)"//图例文字}},"label": {"show": true, //开启显示"position": 'top', //在右侧显示:right,"textStyle": {"color": "rgba(255,255,255,0.9)"//图例文字}},"xAxis": [{"type": "category",//data: ['1月', '2月', '3月', '4月', '5月', '6月', '7月', '8月', '9月', '10月', '11月', '12月'],data: xaxisData,axisLine: {lineStyle: {color: "rgba(255,255,255,.1)"}},axisLabel: {textStyle: {color: "rgba(255,255,255,.6)", fontSize: '14',},},},],"yAxis": [{"type": "value","name": "金额","min": 0,"max": 10000,"interval": 100,"show": false,"axisLabel": {"show": false,//控制是否显示：true,false},axisLine: {lineStyle: {color: 'rgba(255,255,255,.4)'}},//左线色},{"type": "value","name": "完成率","show": true,"axisLabel": {"show": true,//控制显示},axisLine: {lineStyle: {color: 'rgba(255,255,255,.4)'}},//右线色splitLine: {show: true, lineStyle: {color: "#001e94"}},//x轴线},],"grid": {"top": "10%","right": "30","bottom": "30","left": "2%",},dataZoom: [{xAxisIndex: 0, //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: "inside", // 这个 dataZoom 组件是 inside 型 dataZoom 组件startValue: 0, // 从头开始。endValue: 12, // 一次性展示4个。},],"series": [{"name": "2023年","type": "bar",// "data": [123437323, 123578456, 412345636, 912345676, 295532188, 645232535, 434534523, 666673453, 335665340, 334345326, 442323428, 124553222],"data": [111, 222, 333, 444, 555, 666, 777, 888, 999, 1010, 1111, 1212, 1313, 1414, 1515, 1616, 1717, 1818, 1919, 2020, 2121, 2222, 2323, 2424, 2525, 2626, 2727, 2828, 2929, 3030],"barWidth": "auto",label: {show: true, // 是否显示标签position: 'top', // 标签位置，可选值为：top、bottom、center、inside（柱状图内部）、outside（柱状图外部）textStyle: {color: '#FF00FF', // 标签字体颜色fontSize: 14, // 标签字体大小fontWeight: 'bold', // 标签字体加粗fontStyle: 'italic', // 标签字体斜体fontFamily: 'Arial' // 标签字体}},"itemStyle": {"normal": {"color": {"type": "linear","x": 0,"y": 0,"x2": 0,"y2": 1,"colorStops": [{"offset": 0,"color": "#609db8"},{"offset": 1,"color": "#609db8"}],"globalCoord": false}}}},{"name": "2024年","type": "bar","data": [//  423332331, 789142442, 334354524, 135534536, 247448338, 845533436, 444545222, 209876532, 313226542, 665367567, 246854533, 15655445811, 22, 33, 44, 55, 66, 77, 88, 99, 110, 111, 121, 133, 141, 155, 166, 171, 188, 199, 202, 212, 222, 233, 242, 252, 262, 277, 288, 299, 300],"barWidth": "auto","itemStyle": {"normal": {"color": {"type": "linear","x": 0,"y": 0,"x2": 0,"y2": 1,"colorStops": [{"offset": 0,"color": "#66b8a7"},{"offset": 1,"color": "#66b8a7"}],"globalCoord": false}}},"barGap": "0"},{"name": "完成率","type": "line","yAxisIndex": 1,"data": [//  100, 50, 80, 30, 90, 40, 70, 33, 100, 40, 80, 201, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30],lineStyle: {normal: {width: 2},},"itemStyle": {"normal": {"color": "#cdba00",}},"smooth": true}]};// 使用刚指定的配置项和数据显示图表。/*        myChart.setOption(option);window.addEventListener("resize", function () {myChart.resize();});*/console.log('111option.dataZoom===', option.dataZoom);console.log('111option.dataZoom[0].endValue===', option.dataZoom[0].endValue);console.log('111xaxisData.length===', xaxisData.length);timeInterval = setInterval(() => {console.log('222option.dataZoom===', option.dataZoom);console.log('222option.dataZoom[0].endValue===', option.dataZoom[0].endValue);console.log('222xaxisData.length===', xaxisData.length);if (option.dataZoom[0].endValue == xaxisData.length) {option.dataZoom[0].endValue = 5;option.dataZoom[0].startValue = 0;} else {option.dataZoom[0].endValue = option.dataZoom[0].endValue + 1;option.dataZoom[0].startValue = option.dataZoom[0].startValue + 1;}myChart.setOption(option);}, 2000);}

关键代码

setInterval定时器来实现的自右向左的滚动；

 timeInterval = setInterval(() => {console.log('222option.dataZoom===', option.dataZoom);console.log('222option.dataZoom[0].endValue===', option.dataZoom[0].endValue);console.log('222xaxisData.length===', xaxisData.length);if (option.dataZoom[0].endValue == xaxisData.length) {option.dataZoom[0].endValue = 5;option.dataZoom[0].startValue = 0;} else {option.dataZoom[0].endValue = option.dataZoom[0].endValue + 1;option.dataZoom[0].startValue = option.dataZoom[0].startValue + 1;}myChart.setOption(option);}, 2000);

dataZoom: [{xAxisIndex: 0, //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: "inside", // 这个 dataZoom 组件是 inside 型 dataZoom 组件startValue: 0, // 从头开始。endValue: 12, // 一次性展示4个。},],

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