SOURCE

var str = `
title: AxAvatar_头像\n
  category: components_组件\n
  group: General_常用`;
str = str.match(/\/\*(\n|.)*?\*\//);
var dd = /\/\*(\n|.)*?\*\//.exec(str)
console.log(dd[0])
//console.log(str);//结果bbbcccdddeee
console.log(str.match())