从字符串末尾(而不是从中间)删除标点符号

function removePunctuationFromEnd(str) {
  // 使用正则表达式匹配末尾的标点符号并替换为空字符串
  return str.replace(/[.,;!?]$/, '');
}

// 测试示例
console.log(removePunctuationFromEnd("Hello, World!")); // 输出: "Hello, World"
console.log(removePunctuationFromEnd("Good morning.")); // 输出: "Good morning"
console.log(removePunctuationFromEnd("How are you?")); // 输出: "How are you"

function removePunctuationFromEnd(str) {
  return str.replace(/[.,;!?]+$/, '');
}

// 测试示例
console.log(removePunctuationFromEnd("Hello, World!!!")); // 输出: "Hello, World"

function removePunctuationFromEnd(str) {
  return str.replace(/[,.;!?():'"]+$/, '');
}

// 测试示例
console.log(removePunctuationFromEnd("Hello, World!!!")); // 输出: "Hello, World"
console.log(removePunctuationFromEnd("Good morning.")); // 输出: "Good morning"
console.log(removePunctuationFromEnd("How are you?")); // 输出: "How are you"