nodejs如何按行读取文件？

Question

nodejs如何按行读取文件？
为啥readline怎么报错了呢

Answer 1

至少把你的代码贴出来吧，下面是一个小的demo，测试有用，希望对你有点帮助。具体的参数，可以看文档。readline

const readline = require('readline');
const path = require('path');
const fs = require('fs');
let filepath = path.join(__dirname, "app.js")
let input = fs.createReadStream(filepath)
const rl = readline.createInterface({
  input: input
});
rl.on('line', (line) => {
  console.log(`Line from file: ${line}`);
});
rl.on('close', (line) => {
  console.log("读取完毕！");
});

Answer 2

readline

Answer 3

可以参考 一款文件读取库：https://segmentfault.com/a/1190000022398579