Node.Js fs模块---readStream类

const fs = require("fs");
const path = require("path");

let filename = path.resolve('../files/innerDir/innerTxt.txt');
let readStream = fs.createReadStream(filename,{encoding:'utf8'});
readStream.on("open",(data)=>{
    console.log('打开了',data)
})
readStream.on("data",(data)=>{
    console.log("数据来了！");
    console.log("已经读取的字节数",readStream.bytesRead);
})
readStream.on("close",(data)=>{
    console.log('guanle')
})
console.log(readStream.path+"哈哈哈")