If anything, jQuery allowed things to be more FP-oriented. I don't remember who said it, but "jQuery selectors are lenses for the DOM" is one of the better observations about jQuery I've read. A lot of jQuery is unnecessary in modern JS, but we still don't have those sweet selector semantics, and you're still expected to loop over everything by hand. And as a continuing middle finger to the DX, NodeLists don't even support the HOFs of the Array interface and have to be converted to arrays by hand.