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原标题:JavaScript insert div
  • 时间:2011-10-21 20:43:01
  •  标签:
  • javascript

I m 试图在“附加 div”纽顿之前插入一iv。 I m 收到该法典未发现的错误:

document.getElementById("reg").insertBefore(newField, document.getElementById("op"));

但这一法典是有效的,尽管它不是我想要的结果:

document.getElementById("reg").insertBefore(newField, document.getElementById("op").parentNode);

来源:

<form id="reg">
  <div class="section">
    <div class="sectionHeader">Welcome</div>
    <div id="op1">
      <div class="split25">
        <select></select>
      </div>
      <div class="split25">
        <select></select>
      </div>
      <div class="split50">
        <input>
      </div>
    </div>
    <div class="additional" id="op"><button></div>
  </div>
<form>

为什么它能与父母亲接触,而不是自己?

最佳回答

When you insertBefore, the second argument has to be a CHILD of the base object

parentNode.insertBefore(newNode, existingNode);

如果现有的Node不是母子,这将失败。 这符合你们的法典。

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