浅析node的path路径模块

//引入path模块
const path=require("path")
//书写要拼接的路径
const pathStr=path.join('/a','/b/c','../','./d','e')

console.log(pathStr)

const path=require("path")

const  fpath='./a/b/c/index.html'

var fullname=path.basename(fpath)

console.log(fullname)
//获取指定后缀的文件名
const namepath=path.basename(fpath,'.html')

console.log(namepath)

const path=require("path")

const fpath='./a/b/c/d/index.html'

const ftext =path.extname(fpath)

console.log(ftext)

const path=require('path')
const fs=require('fs')

const regStyle=/<style>[\s\S]*<\/style>/

const scriptruler=/<script>[\s\S]*<\/script>/
//需要读取的文件
fs.readFile(path.join(__dirname,'/static/index.html'),'utf-8',function(err,dateStr){
    if(err){
        return console.log("读取失败")
    }
   resolveCSS(dateStr)
   resolveHTML(dateStr)
   resolveJS (dateStr)
})

function resolveCSS(htmlStr){
    const r1=regStyle.exec(htmlStr)
    const newcss=r1[0].replace('<style>','').replace('</style>','')
    //将匹配的css写入到指定的index.css文件中
    fs.writeFile(path.join(__dirname,'/static/index.css'),newcss,function(err){
        if(err) return console.log("导入失败"+err.message)
        console.log("ojbk")
    })
}
function resolveJS(htmlStr){
    const r2=scriptruler.exec(htmlStr)
    const newcss=r2[0].replace('<script>','').replace('</script>','')
    //将匹配的css写入到指定的index.js文件中
    fs.writeFile(path.join(__dirname,'/static/index.js'),newcss,function(err){
        if(err) return console.log("导入失败"+err.message)
        console.log("ojbk")
    })
}
function  resolveHTML(htmlStr){
    const newhtml=htmlStr
    .replace(regStyle,'<link rel="stylesheet" href="./index.css">')
    .replace(scriptruler,'<script src="./index.js"></script>')
    //将匹配的css写入到指定的index.html文件中
    fs.writeFile(path.join(__dirname,'/static/index2.html'),newhtml,function(err){
        if(err) return console.log("导入失败"+err.message)
        console.log("ojbk")
    })
}