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javascript - jquery on search filter - if search does not match, option gets hidden but optgroup still displayed, how to hide optgroup - Stack Overflow
GitHub - customd/jquery-visible: A jquery plugin which allows us to quickly check if an element is within the browsers visual viewport regardless of the window scroll position
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How do I Check if an element is hidden in jQuery Using :hidden & :visible Selector in Browser - Coding Diksha
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TUTORIAL: Filter Content With jQuery.filter() & jQuery Selectors | kaidez - Tutorials & Articles about Web Development
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javascript - jQuery DataTable - Column level filters on top and fixed height not working together - Stack Overflow
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