迭代输入中的行，如果一行匹配/^\d+\.\s+（即数字-点-空格），则将该行的其余部分放入数组中：

input = "\n\nOpen Ended Questions:\n1. What makes Vue a popular choice for web development?\n2. How does Vue compare to other JavaScript frameworks?\n3. What are the advantages of using Vue?\n\nClosed Ended Questions:\n1. Does Vue support server-side rendering?\n2. Is Vue compatible with TypeScript?\n3. Does Vue have a built-in router?"

output = []

for (let line of input.split('\n')) {
  line = line.trim()
  let m = line.match(/^\d+\.\s+(.+)/)
  if (m)
    output.push(m[1])
}

console.log(output)

你也可以用一个正则表达式来实现，但是这样的话可读性会差一些。

input = "\n\nOpen Ended Questions:\n1. What makes Vue a popular choice for web development?\n2. How does Vue compare to other JavaScript frameworks?\n3. What are the advantages of using Vue?\n\nClosed Ended Questions:\n1. Does Vue support server-side rendering?\n2. Is Vue compatible with TypeScript?\n3. Does Vue have a built-in router?"

output = [...input.matchAll(/^\d+\.\s+(.+)/gm)].map(r => r[1])

console.log(output)

我假设每个问题都以?结尾，并根据您提到的输入字符串以新行\n开始。考虑到上述模式，以下是实现所需输出的解决方案。

// Input string
const str = "\n\nOpen Ended Questions:\n1. What makes Vue a popular choice for web development?\n2. How does Vue compare to other JavaScript frameworks?\n3. What are the advantages of using Vue?\n\nClosed Ended Questions:\n1. Does Vue support server-side rendering?\n2. Is Vue compatible with TypeScript?\n3. Does Vue have a built-in router?";

// Splitted the input string based on the new line character '\n'
const splittedStr = str.split("\n");

// Filtered out the array items which ends with question mark (?)
const questionsArr = splittedStr.filter(str => str.endsWith('?'));

// Finally removing the numbers from the starting of the question texts.
const res = questionsArr.map(str => str.replace(/^[\d]+\.\ /, ''));

// Desired output
console.log(res);

1.拆分为行
1.过滤管路
1.Map行（删除枚举器）

const input = "\n\nOpen Ended Questions:\n1. What makes Vue a popular choice for web development?\n2. How does Vue compare to other JavaScript frameworks?\n3. What are the advantages of using Vue?\n\nClosed Ended Questions:\n1. Does Vue support server-side rendering?\n2. Is Vue compatible with TypeScript?\n3. Does Vue have a built-in router?"

const lines = input.split('\n');
const listItems = lines
  .filter((line) => /^\d+\./.test(line))
  .map((line) => line.replace(/^\d+\./, "").trim());

console.log(listItems);

这取决于你的输入，如果问题总是有相同的结构？如果是，你必须定义一个正则表达式，匹配你的问题格式，从那里你不需要替换任何句子与空字符串：

let string = "\n\nOpen Ended Questions:\n1. What makes Vue a popular choice for web development?\n2. How does Vue compare to other JavaScript frameworks?\n3. What are the advantages of using Vue?\n\nClosed Ended Questions:\n1. Does Vue support server-side rendering?\n2. Is Vue compatible with TypeScript?\n3. Does Vue have a built-in router?"
// ([0-9])+ is the question number and it has to be 1 or more than one character
// \. is the dot after question number
// .+ is your question
// (\?)? the first question mark after the question text
let regexp = /([0-9])+\..+(\?)?/g;
var questions = string.match(regexp);
var result = [];
questions.forEach((l) => result.push(l.replace(/([0-9])+\./g,'').trim()));
console.log(result);

使用正后视(?<=)和前视(?=)：

const str = "\n\nOpen Ended Questions:\n1. What makes Vue a popular choice for web development?\n2. How does Vue compare to other JavaScript frameworks?\n3. What are the advantages of using Vue?\n\nClosed Ended Questions:\n1. Does Vue support server-side rendering?\n2. Is Vue compatible with TypeScript?\n3. Does Vue have a built-in router?";

const items = str.match(/(?<=^\d+\. +).+?(?=\n|$)/gm)
console.log(items);

说明：Regex101.com

• lookbehind：(?<=\n\d+\. +)字符串开头、一个或多个数字、点、一个或多个空格
• 非贪婪匹配.+?任何字符一次或多次，尽可能少
• 前瞻：(?=\n|$)换行符或行尾

没有lookbehindAssert

使用这个简化的正则表达式，它基本上匹配 *Digit/s后跟点和空格 * 模式的行首^，并捕获行末$之前的剩余字符串(.+)（带有全局和多行标志gm）

/^\d\. (.+)$/gm

Regex101.com demo and explanation
支持基于WebKit的浏览器，例如：Safari不支持LookbehindAssert，您可以使用String.prototype.matchAll()获取具有匹配组的迭代器。使用Spread Syntax ...获取2D数组，使用match[1]访问第一个匹配组，并使用Array.ptototype.map()将其转换为Array

const str = "\n\nOpen Ended Questions:\n1. What makes Vue a popular choice for web development?\n2. How does Vue compare to other JavaScript frameworks?\n3. What are the advantages of using Vue?\n\nClosed Ended Questions:\n1. Does Vue support server-side rendering?\n2. Is Vue compatible with TypeScript?\n3. Does Vue have a built-in router?";

const items = [...str.matchAll(/^\d\. (.+)$/gm)].map(m => m[1]);
console.log(items);

要额外支持不支持String.prototype.matchAll（）方法的旧Internet Explorer浏览器，请使用.exec()，如下所示：

const str = "\n\nOpen Ended Questions:\n1. What makes Vue a popular choice for web development?\n2. How does Vue compare to other JavaScript frameworks?\n3. What are the advantages of using Vue?\n\nClosed Ended Questions:\n1. Does Vue support server-side rendering?\n2. Is Vue compatible with TypeScript?\n3. Does Vue have a built-in router?";

const reg = /^\d\. (.+)$/gm;
const res = [];
let m;
while(m = reg.exec(str)) res.push(m[1]);
console.log(res);

1.如果您与新产品线分开，您将获得

part  0: 
part  1: 
part  2: Open Ended Questions:
part  3: 1. What makes Vue a popular choice for web development? 
part  4: 2. How does Vue compare to other JavaScript frameworks?
part  5: 3. What are the advantages of using Vue?
part  6: 
part  7: Closed Ended Questions:
part  8: 1. Does Vue support server-side rendering?
part  9: 2. Is Vue compatible with TypeScript?
part 10: 3. Does Vue have a built-in router?

1.然后您可以过滤空行和不相关的行。
1.然后删除开头的数字。