tooltip: {
trigger: 'axis',
formatter: function (params) { //回调函数
if(Array.isArray(params) && params.length > 0){
let axisValueLabel = params[0].data.time //标题
let str0 = ''
params.forEach((item,index)=>{
str0 += `${item.marker}${item.seriesName}: ${item.value}`
str0 += index === params.length - 1 ? '' : '<br/>'
})
return axisValueLabel + '<br>' + str0
}
}
},
标签：index,自定义,提示,str0,item,params,echarts From： https://www.cnblogs.com/cc0518/p/16836090.html