Node.js中的固定位置命令提示符

Question

有沒有辦法將命令提示符（只是一個question提示或類似的東西）固定到終端的底部，並使用Node.js記錄它上面的輸出。

一個非常糟糕的例子：

Your favourite food is sushi.
Your favourite food is chicken.
Your favourite food is okra.
--> What is your favourite food?

基本上，我希望用戶始終能夠鍵入，並在輸入上方回顯輸入。

interface.question("What is your favourite food?", function(answer) {
    // output the answer above where this prompt was
    // and somehow keep this same prompt where is is
});

我希望使用它的特定應用程序是一個簡單的IRC客戶端，我有一個供用戶鍵入的位置，並且輸出所有輸出（用戶鍵入的內容，以及其他人也鍵入的內容）用戶正在打字。 下圖中的線是虛構的。

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| --> The user can type here                                         |
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Answer 1

服務器模塊

process.stdout.write("\x1Bc")
console.log(Array(process.stdout.rows + 1).join('\n'));

const myRL = require("serverline")

myRL.init()
myRL.getRL().question("What is your favourite food? ", function(answer) {
  console.log(`Your favourite food is ${answer}.`)
});

function main() {
  let i = 0
  setInterval(function() {
    const num = () => Math.floor(Math.random() * 255) + 1
    i++
    console.log(i + " " + num() + "." + num() + "." + num() + " user connected.")
  }, 700)
}
main()

舊版 ：

https://stackoverflow.com/posts/24519813/revisions

Answer 2

好吧，我正在使用詢問者來解決這類問題..它已經解決了所有這些問題。它很容易使用，你有不同類型的propmt類型。

這里有一個litle示例來形成doc：

var inquirer = require('inquirer');
inquirer.prompt([/* Pass your questions in here */]).then(function (answers) {
    // Use user feedback for... whatever!! 
});

Answer 3

這是一個簡單的解決方案（在macos上使用node v6.4.0進行測試）：

const readline = require('readline');
const rl = readline.createInterface(process.stdin, process.stdout);

// Logs a message keeping prompt on last line
function log(message) {
  readline.cursorTo(process.stdout, 0);
  console.log(message);
  rl.prompt(true);
}

// Testing the solution

rl.question('Enter something...:', userInput => {
  log('You typed ' + userInput);
  rl.close();
});

log('this should appear above the prompt');
setTimeout(
  () => log('this should appear above the prompt'),
  1000
);

Answer 4

只需使用readline核心模塊：

var readline = require('readline');

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

rl.question("What do you think of node.js? ", function(answer) {
  console.log("Thank you for your valuable feedback:", answer);
  rl.close();
});

這將解決您的問題：

var readline = require('readline');

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

var fav_foods = [];

var ask_question = function() {
  rl.question("What is your favourite food? ", function(answer) {
    fav_foods.push(answer)
    fav_foods.forEach(function (element) {
       console.log("Your favourite food is " + element)
    })
    ask_question()
  });
}

ask_question()