var option = { backgroundColor: '#fff', tooltip: { trigger: 'axis', formatter: function (param) { var resultTooltip = "

" + "" + "" + param[0].value + '%' + '

' + "

" + "" + "" + param[1].value + '%' + '

' + "

" + "" + "" + param[2].value + '%' + '

'; return resultTooltip; }, axisPointer: { // 坐标轴指示器，坐标轴触发有效 type: 'shadow', // 默认为直线，可选为：'line' | 'shadow' }, }, grid: { left: '2%', right: '2%', bottom: '2%', top: '2%', containLabel: true, }, legend: { data: ['', '', ''], right: 10, top: 12, itemWidth: 12, itemHeight: 10, }, xAxis: { type: 'category', data: ['有效度', '知识点覆盖率', '难度'], axisLine: { lineStyle: { color: '#333333', }, }, axisLabel: { textStyle: { fontFamily: 'Microsoft YaHei', }, }, }, yAxis: { type: 'value', max: '100', axisLine: { show: false, lineStyle: { color: 'white', }, }, splitLine: { show: true, lineStyle: { color: '#8097b1', type: 'dashed', opacity: '0.76', }, }, axisLabel: {}, }, series: [ { name: '', type: 'bar', barWidth: '12', itemStyle: { normal: { color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [ { offset: 0, color: '#00f0ff', }, { offset: 1, color: '#003aff', }, ]), barBorderRadius: [6, 6, 0, 0], }, }, data: [40, 60, 30], }, { name: '', type: 'bar', barWidth: '12', itemStyle: { normal: { color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [ { offset: 0, color: '#ffd46f', }, { offset: 1, color: '#fe8b04', }, ]), barBorderRadius: [6, 6, 0, 0], }, }, data: [70, 50, 50], }, { name: '', type: 'bar', barWidth: '12', itemStyle: { normal: { color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [ { offset: 0, color: '#4fe74b', }, { offset: 1, color: '#06a103', }, ]), barBorderRadius: [6, 6, 0, 0], }, }, data: [40, 60, 70], }, ], };

分类渐变柱状图