option = { title: { text: '一天用电量分布', subtext: '纯属虚构' }, tooltip: { trigger: 'axis', axisPointer: { type: 'cross' } }, toolbox: { show: true, feature: { saveAsImage: {} } }, xAxis: { type: 'category', boundaryGap: false, }, yAxis: { type: 'value', axisPointer: { snap: true } }, visualMap: { show: true, dimension: 2, pieces: [{ lte: 12, color: 'yellow' },{ gt: 12, lte: 23, color: 'blue' }, { gt: 23, lte: 60, color: 'white' }, { gt: 60, color: 'orange' }] }, series: [{ name: '用电量', type: 'line', smooth: true, data: [ [14,15,11], [3, 6, 23], [2, 1, 60], [1, 7, 1] ] } ] };