如果你想先问用户行数:

//array to save line by line let xInputs = []; const getInput = async (resolve)=>{ const readline = require('readline').createInterface({ input: process.stdin, output: process.stdout, }); readline.on('line',(line)=>{ readline.close(); xInputs.push(line); resolve(line); }) } const getMultiInput = (numberOfInputLines,callback)=>{ let i = 0; let p = Promise.resolve(); for (; i < numberOfInputLines; i++) { p = p.then(_ => new Promise(resolve => getInput(resolve))); } p.then(()=>{ callback(); }); } //get number of lines const readline = require('readline').createInterface({ input: process.stdin, output: process.stdout, terminal: false }); readline.on('line',(line)=>{ getMultiInput(line,()=>{ //get here the inputs from xinputs array }); readline.close(); })

// Work on POSIX and Windows
var fs = require("fs");
var stdinBuffer = fs.readFileSync(0); // STDIN_FILENO = 0
console.log(stdinBuffer.toString());

如果你想先问用户行数:

//array to save line by line let xInputs = []; const getInput = async (resolve)=>{ const readline = require('readline').createInterface({ input: process.stdin, output: process.stdout, }); readline.on('line',(line)=>{ readline.close(); xInputs.push(line); resolve(line); }) } const getMultiInput = (numberOfInputLines,callback)=>{ let i = 0; let p = Promise.resolve(); for (; i < numberOfInputLines; i++) { p = p.then(_ => new Promise(resolve => getInput(resolve))); } p.then(()=>{ callback(); }); } //get number of lines const readline = require('readline').createInterface({ input: process.stdin, output: process.stdout, terminal: false }); readline.on('line',(line)=>{ getMultiInput(line,()=>{ //get here the inputs from xinputs array }); readline.close(); })

readline是专门设计用于使用terminal(即process.stdin.isTTY === true)。有很多模块为通用流提供拆分功能，比如split。它让事情变得超级简单:

process.stdin.pipe(require('split')()).on('data', processLine)

function processLine (line) {
  console.log(line + '!')
}

#!/usr/bin/env node

const EventEmitter = require('events');

function stdinLineByLine() {
  const stdin = new EventEmitter();
  let buff = '';

  process.stdin
    .on('data', data => {
      buff += data;
      lines = buff.split(/\r\n|\n/);
      buff = lines.pop();
      lines.forEach(line => stdin.emit('line', line));
    })
    .on('end', () => {
      if (buff.length > 0) stdin.emit('line', buff);
    });

  return stdin;
}

const stdin = stdinLineByLine();
stdin.on('line', console.log);

你可以使用readline模块逐行从stdin中读取:

const readline = require('readline');

const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout,
  terminal: false
});

rl.on('line', (line) => {
    console.log(line);
});

rl.once('close', () => {
     // end of input
 });