css适配方案总结

css适配方案总结

vw 适配直接宽度/设计稿宽度(假设750px)*100vw=xvw 可以用vscode插件,也可以用scss 内置的预处理

@function px2vw($px) {
  @return $px * 100vw / 750;
}
.button {
  width: px2vw(120);
  font-size: px2vw(28);
  line-height: px2vw(48);
  border: 1px solid #000;
  text-align: center;
}

viewport 通过 js控制viewport的缩放比例缺点就是细节上无法处理。



<head>
  <meta charset="utf-8">
  <script>
    const WIDTH = 750
    const mobileAdapter = () => {
      let scale = screen.width/WIDTH
      let content = `width=${WIDTH}, initial-scale=${scale}, maximum-scale=${scale}, minimum-scale=${scale}`
      let meta = document.querySelector('meta[name=viewport]')
      if(!meta) {
        meta = document.createElement('meta')
        meta.setAttribute('name', 'viewport')
        document.head.appendChild(meta)
      } 
      meta.setAttribute('content', content)
    }
    mobileAdapter()
    window.onorientationchange = mobileAdapter
  </script>
</head>
<body>
 ...
</body>
</html>

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, 
    initial-scale=1, maximum-scale=1, minimum-scale=1">
  <script>
    const WIDTH = 750  //如果是尺寸的设计稿在这里修改
    const setView = () => {
      //设置html标签的fontSize
      document.documentElement.style.fontSize = (100*screen.width/WIDTH) + 'px'
    }
    window.onorientationchange = setView
    setView()
  </script>
  
  <style>
    div {
      width: 3.75rem; /* 需要随屏幕等比缩放，使用rem单位，比如设计稿中标注的32px这里写成0.32rem */
      border: 1px solid #ccc; /*不需要缩放的部分用px*/
    }
  </style>
</head>
<body>
  <div>内容</div>
</body>
</html>