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锚点固定高度，超出隐藏后，内容滚动锚点不滚动，导致看不到当前的锚点

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锚点固定高度，超出隐藏后，内容滚动锚点不滚动，导致看不到当前的锚点

类似百度这样的效果
image.png
现在的情况
image.png
右侧高度固定，隐藏的部分手动滚动右边可以看到 不会自动随着左侧的内容滚动显示在可视区域，求教
image.png


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js检测菜单对应的DOM元素是否在可视区显示，显示则滚动到对应菜单
对应的判断方法可以使用较新的Intersection Observer API；也可以使用scrollTop或者Element.getBoundingClientRect()


与恶龙缠斗过久,自身亦成为恶龙；凝视深渊过久,深渊将回以凝视…
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