const fs = require('fs');// fs.mkdir('./html',err=>{ // 创建文件夹// if(err){// console.log('创建失败');// &n
const fs = require('fs');// fs.unlink('./data1.txt', err=>{ // 删除文件// if(err){// console.log('删除失败')// &nb
const fs = require('fs')// fs.rename('./data2.txt','./data3.txt',err=>{ // 重命名文件// if(err){// console.log('操作失败')// }// &
const fs = require('fs')let rs = fs.createReadStream('./data1.txt')let ws = fs.createWriteStream('data2.txt')// 绑定 data 事件rs.on('data',chunk=>{ ws.write(chunk) // 写入读出的ch
const fs = require('fs');let rs = fs.createReadStream('./data1.txt') // 流入读取rs.on('data',chunk=>{ console.log(chunk) console.log(chunk.length)
const fs = require('fs');fs.readFile('./data1.txt',(err,data)=>{ if(err){ console.log('读取失败'); return; }
const fs = require('fs');let ws = fs.createWriteStream('./data1.txt') // 流式写入，频繁写入的ws.write('床前明月光\n')ws.write('凝是地上霜\n')ws.write('举头望明月\n')ws.write('低头思故乡\n')
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