请问cloneNode，previousSibling 这个是怎么用的。

lone_lau · 发表于 2020-1-7 22:20:01

<HTML>
<HEAD>
  <TITLE> New Document </TITLE>
<SCRIPT LANGUAGE="JavaScript">

</SCRIPT>

</HEAD>

<BODY>

<FORM METHOD=POST ACTION="">
   <div style="height:20px" align="center">xxx<span>aaa<span></div>
   <INPUT TYPE="button" value="clone" onclick="clone(this.previousSibling)">
</FORM>
</BODY>
</HTML>

wwwcom · 发表于 2020-1-9 11:27:02

Node.cloneNode( ) duplicate a node and, optionally, all of its descendants

Availability

DOM Level 1 Core
Synopsis
Node cloneNode(boolean deep);
Arguments
deep

If this argument is true, cloneNode( ) recursively clones all descendants of this node. Otherwise, it clones only this node.
Returns

A copy of this node.
Description

The cloneNode( ) method makes and returns a copy of the node on which it is called. If passed the argument true, it recursively clones all descendants of the node as well. Otherwise, it clones only the node and none of its children. The returned node is not part of the document tree, and its parentNode property is null. When an Element node is cloned, all of its attributes are also cloned. Note, however, that EventListener functions registered on a node are not clone

lone_lau · 发表于 2020-1-10 21:36:01

只看懂个大概意思。但是好象没有发现上面那种问题的答案。继续求解。

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