jQuery 3 slightly modifies the meaning of :visible (and therefore of :hidden ). Starting with this version, elements will be considered :visible ... ... <看更多>

... element is within the browsers visual viewport regardless of the window scroll position - GitHub - customd/jquery-visible: A jquery plugin which allows ... ... <看更多>

A free, fast, and reliable CDN for jquery-visible. Quickly check if an element is within the browsers visible viewport, regardless of scroll position. ... <看更多>

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jquery :visible - ythy/blog Wiki. check if an element is hidden in jQuery. // Checks for display:[none|block], ignores visible:[true|false] ... ... <看更多>