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並前往https://support.ptc.com/help/arbortext/r8.1.0.0/en/Program/programmer_ref/range_startcontainer.html

startContainer attribute

startContainer. Access. read-only. Returns. Node. Get throws. DOMException. INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.

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查詢 「Startcontainer」的人也找了：

  1. startOffset
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  2. surroundContents
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  3. Selectnode
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  4. selectNodeContents
    5.
  5. endOffset
    6.
  6. Extractcontents
    7.
  7. Range setStart
    8.
  8. Range setstartafter
    9.