Javascript operations on dom -- get the sibling node & getElementsByTagName usage

[Html]... & lt; tr & gt; & lt; tdname & amp; #39; subbtn & amp; #39; id & amp; #39; subbtn & amp; #39; & gt; afdfa & lt;/td & gt; & lt; td & gt; adda & lt;/td & gt; & lt; td & gt; 3dd & lt; /td & gt; & lt;/tr & gt;

[Html]
....
AfdfaAdda3dd 
DdbbBddd5dd 
CcddFdd5d55 
....
Script
Var sub = document. getElementById ("subbtn ");
Var thb = document. getElementById ("thid ");
Var ths = document. getElementsByTagName ("th ");
Var value = ths [0]. innerHTML;
Thfirst = ths [0];
Value = thfirst. nextSibling. innerHTML;
Alert (value)
Alert (sub. name)
Script

Document Tree node
ParentElement parent Element
ParentNode parent node
All child nodes of childNodes have s.
First child node of firstChild
Last child node of lastChild
Next sibling node of nextSibling
A sibling node on previussibling

You can use innerHTML to obtain the value of an element.

 

GetElementsByTagName

Var item = document. getElementById ('id'). getElementsByTagName ("tag name ");

Item [1] is the first tag (in IE, it is the second tag, and IE starts counting from 0)

Author: cjh6311882