remallattr.html
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<TITLE>Removing All the Attributes in a DOM Element
(Java Developers Almanac Example)
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<h3>
e537.
Removing All the Attributes in a DOM Element</h3>
The tricky part of removing all the attributes in an XML element
is to realize that attributes with a default value cannot be removed.
Therefore, the following code will never terminate if the element
has an attribute with a default value:
<pre>
// Very bad code; may never terminate
NamedNodeMap attrs = <font color="#0066ff"><i>element</i></font>.getAttributes();
while (attrs.getLength() > 0) {
attrs.removeNamedItem(attrs.item(0).getNodeName());
}
</pre>
This example removes all attributes by first making a copy of the attribute
names and then using the list to remove the attributes:
<pre>
// Remove all the attributes of an element
NamedNodeMap attrs = <font color="#0066ff"><i>element</i></font>.getAttributes();
String[] names = new String[attrs.getLength()];
for (int i=0; i<names.length; i++) {
names[i] = attrs.item(i).getNodeName();
}
for (int i=0; i<names.length; i++) {
attrs.removeNamedItem(names[i]);
}
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Related Examples
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e534. <a class="eglink" href="GetAttr.html?l=rel">
Getting and Setting an Attribute in a DOM Element
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e535. <a class="eglink" href="AddAttr.html?l=rel">
Adding and Removing an Attribute in a DOM Element
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e536. <a class="eglink" href="GetAllAttr.html?l=rel">
Listing All the Attributes of a DOM Element
</a>
<br>
e538. <a class="eglink" href="IfAttr.html?l=rel">
Determining If an Attribute Was Supplied in a DOM Element
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See also:
<a class="eglink" href="/egs/org.w3c.dom/pkg.html?l=rel#Adding%20and%20Removing%20Nodes">
Adding and Removing Nodes
</a>
<a class="eglink" href="/egs/org.w3c.dom/pkg.html?l=rel#Elements">
Elements
</a>
<a class="eglink" href="/egs/org.w3c.dom/pkg.html?l=rel#Getting%20Nodes">
Getting Nodes
</a>
<a class="eglink" href="/egs/org.w3c.dom/pkg.html?l=rel#Text%20Nodes">
Text Nodes
</a>
<a class="eglink" href="/egs/org.w3c.dom/pkg.html?l=rel#XPath">
XPath
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