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並前往https://stackoverflow.com/questions/47986175/why-does-xpath-exaluate-gives-snapshotlength-1-for-html-body-and-0-for-html

Why does XPath exaluate gives snapshotLength = 1 for /html ...

snapshotLength ) { console.log(allLinks.snapshotItem(0).innerHTML); } else { console.log("Bother..."); } }, 5000);.

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查詢 「snapshotLength」的人也找了：

  1. xpathresult
    2.
  2. unordered_node_iterator_type
    3.
  3. ordered_node_snapshot_type
    4.
  4. xpathresult is undefined
    5.
  5. the result is not a node set
    6.