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<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>부트스트랩</title>
</head>
<body>
  <div>
    <ul>
      <li id="list1">1. 웹 프로그래밍 기초</li>
      <li id="list2">2. DB연결 웹 애플리케이션</li>
      <li id="list3">3. 웹 애플리케이션 개발 1/4</li>
    </ul>
  </div>
  <button id="copyListButton">첫번째 리스트만 남기고 제거</button>
</body>
</html>
 
var copyListButton = document.getElementById("copyListButton");
copyListButton.addEventListener("click", function() {
  var ul = document.querySelector("ul");
  var list1Html = document.getElementById("list1").innerHTML;
  
  ul.innerHTML = list1Html;
});
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moonki-chopro
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