`var placeHolderStyle = {
normal: { label: { show: false }, labelLine: { show: false }, color: "rgba(0,0,0,0)", borderWidth: 0},emphasis: { color: "rgba(0,0,0,0)", borderWidth: 0}};
option = {
series: [ { name: '', type: 'pie', startAngle: 0, radius: ['40%', '70%'], avoidLabelOverlap: false, label: { show: false, position: 'center' }, emphasis: { label: { show: true, fontSize: '30', fontWeight: 'bold' } }, labelLine: { show: false }, data: [ {value: 10, name: '10', }, { value: 5, itemStyle: placeHolderStyle, }, ] }, { name: '', type: 'pie', startAngle: (5/15*360), radius: ['40%', '60%'], avoidLabelOverlap: false, label: { show: false, position: 'center' }, emphasis: { label: { show: true, fontSize: '30', fontWeight: 'bold' } }, labelLine: { show: false }, data: [ {value: 7, name: '7', }, { value: 8, itemStyle: placeHolderStyle, }, ] },{ name: '', type: 'pie', startAngle: ((5/15+8/15+2/15)*360), radius: ['40%', '50%'], avoidLabelOverlap: false, label: { show: false, position: 'center' }, emphasis: { label: { show: true, fontSize: '30', fontWeight: 'bold' } }, labelLine: { show: false }, data: [ {value: 2, name: '2',itemStyle:{color:'pink'} }, { value: 13, itemStyle: placeHolderStyle, }, ] }]};
`