原生相册功能

<!DOCTYPE html>
<html lang="en">
  <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>相册</title>
    <style>
      /* 通用样式 */
      * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
      }
      li {
        list-style: none;
      }
      a {
        text-decoration: none;
      }
      .container {
        display: flex;
        flex-flow: row wrap;
        justify-content: space-around;
      }
      .container > .butgirl {
        width: 13rem;
        border: 1px solid green;
        padding: 0.5rem;
        margin-top: 0.5rem;
      }
      .container > .butgirl > img {
        width: 100%;
      }
      /* 按钮 */
      .container > .butgirl > .btn {
        display: flex;
        justify-content: space-between;
        margin-top: 0.5rem;
      }
      .container > .butgirl > .btn > button {
        background-color: green;
        height: 1.5rem;
        border-radius: 0.5rem;
        border: none;
        flex: 0 1 31%;
      }
    </style>
  </head>
  <body>
    <div class="container"></div>
    <script>
      let imgsGroup = [
        "images/img-1.jpg",
        "images/img-4.jpg",
        "images/img-8.jpg",
        "images/img-16.jpg",
        "images/img-24.jpg",
        "images/img-20.jpg",
        "images/img-25.jpg",
        "images/img-39.jpg",
      ];
      // 获取图片容器
      let container = document.querySelector(".container");
      //当页面加载完成之后显示图片
      window.onload = showImgs;
      //图片展示方法
      function showImgs() {
        let res = imgsGroup.reduce(function (prev, curr) {
          let html = `
            <div class="butgirl">
              <img src="${curr}" />
              <div class="btn">
                <button onclick=goBefer(this)>向前</button>
                <button onclick=goAfter(this)>向后</button>
                <button onclick=goDel(this)>删除</button>
              </div>
            </div>
        `;
          return prev + html;
        }, "");
        container.insertAdjacentHTML("afterbegin", res);
      }
      //图片向前
      function goBefer(obj) {
        //获取点击的图片元素
        let father = obj.parentNode.parentNode;
        //点击的图片元素的上一个兄弟元素
        let befor = father.previousElementSibling;
        // console.log(befor);
        if (befor == null) {
          alert("不能向前了！");
          return false;
        }
        // 将兄弟元素插入到点击元素之前
        container.insertBefore(father, befor);
      }
      // 图片向后
      function goAfter(obj) {
        //获取点击的图片元素
        let father = obj.parentNode.parentNode;
        //点击的图片元素的下一个兄弟元素
        let next = father.nextElementSibling;
        // console.log(befor);
        if (next == null) {
          alert("不能向后了！");
          return false;
        }
        // 将点击元素插入到兄弟元素之后
        // dom只提供了
        container.insertBefore(next, father);
      }
      // 图片删除
      function goDel(obj) {
        let father = obj.parentNode.parentNode;
        if (confirm("是否删除？")) father.remove();
      }
    </script>
  </body>
</html>
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