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手机浏览器不设置overflow会导致自动缩放 #20

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leopen-hu opened this issue Feb 21, 2021 · 0 comments
Open

手机浏览器不设置overflow会导致自动缩放 #20

leopen-hu opened this issue Feb 21, 2021 · 0 comments

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@leopen-hu
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leopen-hu commented Feb 21, 2021 •
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当内容长度超过屏幕宽度时，如果不设置overflow，那么浏览器页面会按比例（最长元素宽度/设备宽度）缩放，引发显示异常的问题。
复现代码如下：

<html>
  <head>
    <meta name="viewport" content="initial-scale=1.0, width=device-width" />
  </head>
  <style>
    * {
      padding: 0;
      margin: 0;
    }
    .overflow {
      overflow: auto;
    }
  </style>
  <script>
    function changeOverflow() {
      console.log('1111111111111111111');
      const ele = document.getElementById('testDiv');
      const overflow = ele.className;

      if (overflow) {
        ele.className = ''
      } else {
        ele.className = 'overflow'
      }
    }
  </script>
  <body>
    <button onclick="changeOverflow()">changeOverflow</button>
    <p style="width: 100vw; background-color: black;">fff</p>
    <div id="testDiv" class="overflow">fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff</div>
  </body>
</html>
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@leopen-hu