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What is the native equivalent to jQuery's “$.fn.has”?

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情歌与酒
情歌与酒 2021-01-27 11:51

What\'s the native equivalent of jQuery\'s $.fn.has?

For example, how would you write the following code:

$(\"li\").has(\"ul\").css(\"background-color\",
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  • 孤独总比滥情好
    孤独总比滥情好 (楼主)
    2021-01-27 12:46

    Since i don't use jQuery, I can not make not sure if has selects all

  • elements which are direct parents of elements (like CSS selector li > ul) or selects all
  • elements having elements under (like CSS selector li ul). Chose the one you like;

    Array.from(document.querySelectorAll("li ul")).reduce((r, e) =>
  r.length ? (r[r.length - 1] === e.parentElement ? r : r.concat(e.parentElement)) : r.concat(e.parentElement), []
);

    Thanks @Barmar's comment for the clarification.

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