Skills/JavaScript

221206 dom_10.html (탭 만들기)

개발자 윤구나 2022. 12. 6. 09:57 
<!DOCTYPE html>
<html lang="ko">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>practice</title>
    <script>
      document.addEventListener("DOMContentLoaded", () => {
        let mainImg = document.querySelector(".main_img > img");
        let thumImg = document.querySelectorAll(".thum_img > li"); // li 선택할 때는 querySelectorAll 쓰기★

        // 방법1.
        for (let i = 0; i < thumImg.length; i++) {
          thumImg[i].onclick = mainBox;
        }

        function mainBox() {
          let imgSrc = this.children[0].src; // this는 thumImg[i]를 받음

          mainImg.setAttribute("src", imgSrc);
        }

        // 방법2.
        for (let i in thumImg) {
          thumImg[i].addEventListener("click", function () {
            mainImg.src = this.children[0].src;
          });
        }
      });
    </script>
    <style>
      * {
        margin: 0;
        padding: 0;
      }
      li {
        list-style: none;
      }
      img {
        display: block;
        width: 100%;
      }

      .container {
        width: 600px;
      }
      .container .main_img {
        height: 395px;
        overflow: hidden;
      }
      .container .thum_img {
        display: flex;
        padding: 5px;
        box-sizing: border-box;
      }
      .container .thum_img li:nth-child(2) {
        margin: 0 5px;
      }
    </style>
  </head>
  <body>
    <div class="container">
      <h1>썸네일 이미지 변화</h1>
      <div class="main_img">
        <img src="./images/bx_img01.jpg" alt="main_img" />
      </div>
      <!--main_img-->
      <ul class="thum_img">
        <li><img src="./images/bx_img01.jpg" alt="썸네일 이미지01" /></li>
        <li><img src="./images/bx_img02.jpg" alt="썸네일 이미지02" /></li>
        <li><img src="./images/bx_img03.jpg" alt="썸네일 이미지03" /></li>
      </ul>
      <!--thum_img-->
    </div>
    <!--container-->
  </body>
</html>