option = { backgroundColor:'#FFFFFF', /* tooltip:{ show:true, axisPointer:{ type:'cross' }, formatter:function (params) { if(params.value[1]>55) { return params.name + '<br/>' +"GNI: "+params.value[1]+ '美元<br/>' +'年龄: '+params.value[0]; } else{ return params.name+' '+params.value; } } },*/ xAxis: { type: 'category', boundaryGap: false, data: ['2015', '2016', '2017', '2018'] }, yAxis: { type: 'value', name:"持证主体数", fontSize:'16', }, color:'#00af87', tooltip: { trigger: 'item', formatter: "{b}<br/>持证主体数 : {c}" }, grid: { top: 100, left: '20%', width: '38%', bottom: '65%' }, series: [{ data: [820, 901, 1290, 1320], type: 'line', areaStyle: {}, itemStyle:{ normal: {type: 'default', color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [{ offset: 0, color: '#08a0ae' }, { offset: 1, color:'#a2f0f7' }], false) } } }] };