节点.Js函数在promise返回时调用一次时运行两次

Question

我正试图根据用户输入创建尽可能多的谷歌幻灯片。理论上，如果我能解决这个问题，我的代码应该可以工作。问题是，我不能。当我运行我的代码时，它会停止，因为createSlide((函数在一个调用中运行两次，并创建了两个Id相同的幻灯片。在网上闲逛，我只发现了关于Node的东西。Js从浏览器输入。第一次通过它运行正常，它做了它应该做的事情，但当创建幻灯片二(id:slide_1(时，它制作幻灯片，将文本加倍，例如：

Hi
bye

将创建

Hi
bye
Hi
bye

然后停止，因为不可能有两个Id相同。这是我的代码(由于幻灯片创建工作正常，我已经删除了请求(：

function askYOrN(auth){
console.log("HELLO");
const r4 = readline.createInterface({
input: process.stdin,
output: process.stdout
});
r4.question("Do you want to add a slide [Y/N]? ", function(yesOrNo){
yesOrNoLog = yesOrNo;
r4.close();
fAskForNewCounter = fAskForNewCounter + 1;
askForNew(auth);
});
}
//ASKS IF ANOTHER SLIDE IS NEEDED
function askForNew(auth){
//READLINE
const r5 = readline.createInterface({
input: process.stdin,
output: process.stdout, 
terminal: false
});
//CLEARS txt
txtArray = [];
//CHECKS THE ANSWER AND DOES ACCORDINGLY
if (yesOrNoLog == "yes" || yesOrNoLog == "y"){
//ASKS FOR TEXT AND ASSIGNS IT TO THE VARIABLE
r5.prompt();
console.log("Text:n");
r5.on('line', function (textIn) {
if (textIn == ".exit" || textIn == ".e" || textIn == ".next" || textIn == ".n"){
createSlide(auth);
}else{
textArray.push(textIn);
textArray.push('n');
}
}); 
}else if (yesOrNoLog == "no" || yesOrNoLog == "n"){
//CREATES TITLE SLIDE
createTitleSlide(auth);
}else{
//ASKS FOR VALID ANSWER
if (fAskForNewCounter >= 0){
console.log("Enter a valid answer");
askYOrN(auth);
}
}
}
//DECLARATION FOR THE NUMBER COUNTER [ num ]
var num = 0;
function createSlide(auth) {
//AUTHENTICATION
const slides = google.slides({version: 'v1', auth});
//CHANGES txtArray TO STRING
var txt = txtArray.join('');
//CHANGING VARS
var slideId = 'slide_' + num;
var pageId = slideId;
var textId = 'text_box_' + num;
var elementId = textId;
var iIndex = num;
//SLIDE NUMBER
var sNum = num + 1;

console.log(pageId);
//ALL REQUESTS GO IN requests
var requests = [{   
}];
//BATCH UPDATE
return slides.presentations.batchUpdate({
presentationId,
resource: {
requests,
},
}, (err, res) => {
if (err) {
error(err);
}else{
console.log("Slide #" + sNum + " has been created");
//INCREASES COUNTER BY 1
num = num + 1;
//ASKS IF A NEW SLIDE WANTS TO BE CREATED
var delay = 30;
var lastClick = 0;
if (lastClick >= (Date.now() - delay))
return;
lastClick = Date.now();
yesOrNoLog = "";
askYOrNo(auth);
}
});
}

提前感谢您的帮助！

EDIT
我还做了一些工作，发现在我的代码中r5.on运行了两次。我尝试删除数组.push("\n"(。但这并不能解决问题。阵列输出为

[hi, bye, hi, bye]

这是我的新代码，我再次删除了请求：

//ASKS IF YOU WANT A NEW SLIDE
function askYOrN(auth){
console.log("askYOrN");
const r4 = readline.createInterface({
input: process.stdin,
output: process.stdout,
terminal: false
});
r4.question("Do you want to add a slide [Y/N]? ", function(yesOrNo){
console.log("aksYOrN question");
yesOrNoLog = yesOrNo;
r4.close();
yOrNCheckCounter = yOrNCheckCounter + 1;
askYOrNCheck(auth);
});
}
//ASKS IF ANOTHER SLIDE IS NEEDED
function askYOrNCheck(auth){
console.log("askYOrNCheck begins");
//READLINE
const r5 = readline.createInterface({
input: process.stdin,
output: process.stdout, 
terminal: false
});
//CLEARS TXT
txtArray = [];
//CHECKS THE ANSWER AND DOES ACCORDINGLY
if (yesOrNoLog == "yes" || yesOrNoLog == "y"){
//ASKS FOR TXT AND ASSIGNS IT TO THE VARIABLE
console.log("prompt opens");
r5.prompt();
console.log("Text:");
r5.on('line', function (textIn) {
console.log("r5.on");
if (textIn == ".exit" || textIn == ".e" || textIn == ".next" || textIn == ".n"){
console.log("if next");
createSlide(auth);
}else{
console.log(txtArray);
console.log("about to push text");
txtArray.push(textIn);
console.log(txtArray);
}
}); 
}else if (yesOrNoLog == "no" || yesOrNoLog == "n"){
//CREATES TITLE SLIDE
createTitleSlide(auth);
}else{
//ASKS FOR VALID ANSWER
if (yOrNCheckCounter >= 0){
console.log("Enter a valid answer");
askYOrN(auth);
}
}
}
//DECLARATION FOR THE NUMBER COUNTER [ num ]
var num = 0;
function createSlide(auth) {
//AUTHENTICATION
const slides = google.slides({version: 'v1', auth});
//CHANGES txtArray TO STRING
var text = txtArray.join('n');
//CHANGING VARS
var slideId = 'slide_' + num;
var pageId = slideId;
var textId = 'text_box_' + num;
var elementId = textId;
var iIndex = num;
//SLIDE NUMBER
var sNum = num + 1;
console.log(pageId);
//ALL REQUESTS GO IN [ requests ]
var requests = [];
//BATCH UPDATE
return slides.presentations.batchUpdate({
presentationId,
resource: {
requests,
},
}, (err, res) => {
if (err) return error(err);
console.log("Slide #" + sNum + " has been created");
//INCREASES COUNTER BY 1
num = num + 1;
//ASKS IF A NEW SLIDE WANTS TO BE CREATED
askYOrN(auth);
});
}

注意：我将askForNew((重命名为askYOrNoCheck((。

再次感谢你的帮助。

Answer 1

需要添加r5.close((。它从一个输入中获取多个输入。