例：//中心文字数据var data;@if(($manual_visit+$finish_visit)!=0) data ='回访率\n'+ '{
  { number_format(($manual_visit+$finish_visit)/($manual_visit+$finish_visit+$not_connect+$not_visit)*100,2) }}'+ '%';@else data ='回访率\n0%';@endif

var manual_visit = "{
  { $manual_visit }}";var finish_visit = "{
  { $finish_visit }}";var not_connect = "{
  { $not_connect }}";var not_visit = "{
  { $not_visit }}";var myCharts1 = echarts.init(document.getElementById('cake'));var option1 = {    backgroundColor: 'white',    tooltip: {        trigger: 'item',        formatter: "{b} :{c}个 ({d}%)"    },    legend: {        orient: 'vertical',        x: '75%',        y: '30%',        itemWidth: 10,        itemHeight: 10,        itemGap: 30,        data: [            {                name: "手动回访",                icon: "circle",                textStyle: {                    fontSize: '14'                }            },            {                name: "已回访",                icon: "circle",                textStyle: {                    fontSize: '14'                }            },            {                name: "未接通",                icon: "circle",                textStyle: {                    fontSize: '14'                }            },            {                name: "未回访",                icon: "circle",                textStyle: {                    fontSize: '14'                }            }        ]    },    series: [        {            name: '回访数据',            type: 'pie',            avoidLabelOverlap: false,            radius: ['42%', '70%'],            center: ['40%', '50%'],            label: {                normal: {                    show: true,                    position: 'center',                    formatter(){                       return data;                    },                    color:"#4ecb73",                    fontSize:22                },            },            labelLine: {                normal: {                    show: false                }            },            data: [                {                    value: manual_visit,                    name: '手动回访',                    itemStyle: {                        normal: {                            color: '#4bdbac'                        }                    }                },                {                    value: finish_visit,                    name: '已回访',                    itemStyle: {                        normal: {                            color: '#4ecb73'                        }                    }                },                {                    value: not_connect,                    name: '未接通',                    itemStyle: {                        normal: {                            color: '#ff7c7c'                        }                    }                },                {                    value: not_visit,                    name: '未回访',                    itemStyle: {                        normal: {                            color: '#f2637b'                        }                    }                }            ],        }    ]};myCharts1.setOption(option1);