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  1. 森建 (moriken@social.kimamass.com)'s status on Tuesday, 20-Nov-2018 18:03:36 JST 森建 森建

    ParentNode#childElementCount とか NonDocumentTypeChildNode#previousElementSibling とか知らない DOM API がまだまだあるなぁ。
    https://developer.mozilla.org/en-US/docs/Web/API/ParentNode/childElementCount
    https://developer.mozilla.org/en-US/docs/Web/API/NonDocumentTypeChildNode/previousElementSibling

    In conversation Tuesday, 20-Nov-2018 18:03:36 JST from social.kimamass.com permalink

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    1. Domain not in remote thumbnail source whitelist: developer.mozilla.org
      ParentNode.childElementCount
      from MDN Web Docs
      The ParentNode.childElementCount read-only property returns an unsigned long representing the number of child elements of the given element.
    2. Domain not in remote thumbnail source whitelist: developer.mozilla.org
      NonDocumentTypeChildNode.previousElementSibling
      from MDN Web Docs
      The NonDocumentTypeChildNode.previousElementSibling read-only property returns the Element immediately prior to the specified one in its parent's children list, or null if the specified element is the first one in the list.

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