let res = "$你好你好$"
res = res.replace(/\$(?<=\$).*?(?=\$)\$/g,
`<span onclick="((params)=>{
console.log(params)
})('$&')" style="color: dodgerblue;padding: 0 5px;">$&</span>`)
标签：结尾,res,js,正则,开头,你好 From： https://www.cnblogs.com/Man-Dream-Necessary/p/17508583.html