移動端橫向滑動,切換到pc頁面效果消失

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    .fa {
      width: 200px;
      display: flex;
      justify-content: space-between;
      white-space: nowrap;
      overflow-y: hidden;
      overflow-x: scroll;
    }

    .son {
      padding: 12.8px 0 12.8px 0;
      margin-right: 19.2px;
      background: tomato;

    }

    .scrollBox {
      height: 500px;
      overflow-x: scroll;
      /* 內容會被裁剪，會以滾動條顯示 */
      overflow-y: hidden;
      /* 超出內容不可見 */
      white-space: nowrap;
      /* 不換行 */
      /* 文本不會換行，會在同一行上繼續，直到遇到<br>爲止 */
    }

    .blockDiv {
      width: 340px;
      margin-right: 10px;
      display: inline-table;
      background: tomato;
      height: 500px;
      /* 不換行 */
    }
  </style>
</head>

<body>

  <div class="fa">
    <div class="son">1111111</div>
    <div class="son">22222222</div>
    <div class="son">3333333333</div>
    <div class="son">4444444444</div>
    <div class="son">666666666</div>

  </div>
  <div class="scrollBox">
    <div class="blockDiv">
    </div>
    <div class="blockDiv">
    </div>
    <div class="blockDiv">
    </div>
    <div class="blockDiv">
    </div>
    <div class="blockDiv">
    </div>
    <div class="blockDiv">
    </div>
    <div class="blockDiv">
    </div>
    <div class="blockDiv">
    </div>
    <div class="blockDiv">
    </div>
  </div>

</body>

</html>

以上方法是錯的,實際上是經過white:space 僞實現(子盒子寬不寫死)html

下面是真正的實現(子盒子的寬固定)promise

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<style>
  * {
    margin: 0;
    padding: 0;
  }

  li {
    list-style: none;
  }

  .box1 {
    width: 320px;
    height: 60px;
    overflow: hidden;
    /* 超出隱藏滾動條 */
    background-color: skyblue;
  }

  .box1 .wrap {
    width: 320px;
    /* 和父盒子寬度同樣 */
    height: 76px;
    /* 比裏層元素高16px 爲了隱藏滾動條*/
    overflow-x: scroll;
    /* 定義超出此盒子滾動 */
    overflow-y: hidden;
  }

  .box1 .wrap ul {
    width: 640px;
    display: flex;
  }

  .box1 .wrap ul li {
    flex: 1;
    width: 60px;
    height: 60px;
    box-sizing: border-box;
  }
</style>

<body>
  <div class="box1">
    <div class="wrap">
      <ul>
        <li>1移動端</li>
        <li>2可滑動</li>
        <li>3ie8以上</li>
        <li>4</li>
        <li>5</li>
      </ul>
    </div>
  </div>
</body>

</html>

更加完美,flex適應子盒子async

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>Document</title>
</head>
<style>
  * {
    margin: 0;
    padding: 0;
  }

  li {
    list-style: none;
  }

  .box1 {
    width: 320px;
    height: 60px;
    overflow: hidden;
    /* 超出隱藏滾動條 */
    background-color: skyblue;
  }

  .box1 .wrap {
    width: 320px;
    /* 和父盒子寬度同樣 */
    height: 76px;
    /* 比裏層元素高16px 爲了隱藏滾動條*/
    overflow-x: scroll;
    /* 定義超出此盒子滾動 */
    overflow-y: hidden;
  }

  .box1 .wrap ul {
    /* width: 640px; */
    display: flex;
  }

  .box1 .wrap ul li {
    /* flex: 1; */
    width: 80px;
    height: 60px;

    flex-shrink: 0;
    box-sizing: border-box;
  }
</style>

<body>
  <div class="box1">
    <div class="wrap">
      <ul>
        <li>1移動端</li>
        <li>2可滑動</li>
        <li>3ie8以上</li>
        <li>4</li>
        <li>5</li>
      </ul>
    </div>
  </div>
  <script>
    // let promise = new Promise(function (resolve, reject) {
    //   // 當 promise 被構造完成時，自動執行此函數

    //   // 1 秒後發出工做已經被完成的信號，並帶有結果 "done"
    //   setTimeout(() => {
    //     console.log(1)
    //   }, 1000)
    //   resolve()
    // })
    // promise.then(() => {
    //   console.log(2)
    // })
    async function a() {
      let b = await setTimeout(() => {
        console.log(1)
      }, 200)
      console.log(2)
    }
    a()
  </script>
</body>

</html>