option = { tooltip: { trigger: 'axis', axisPointer: { // Use axis to trigger tooltip type: 'shadow' // 'shadow' as default; can also be 'line' or 'shadow' } }, legend: {}, grid: { left: '3%', right: '4%', bottom: '3%', containLabel: true }, xAxis: { type: 'value' }, yAxis: { type: 'category', data: [''] }, series: [ { name: 'Direct', type: 'bar', stack: 'total', label: { show: true }, emphasis: { focus: 'series' }, data: [320, 302, 301, 334, 390, 330, 320] } ] };