How to remove attribute method in XML DOM

In this articles i am going to explain about how to remove an attribute by name and object.
  • 1934

How to Remove an Attribute Node by Name

  • The removeAttribute() method removes a specified attribute.
  • The removeAttribute(name) method is remove name in attribute node.
Example

In this example, we remove the category attribute:

<!DOCTYPE html>

<html>

<head>

<script type="text/javascript" src="loadxmldoc.html">

</script>

</head>

<body>

 

<script type="text/javascript">

    xmlDoc = loadXMLDoc("library.xml");

 

    a = xmlDoc.getElementsByTagName('book');

 

    document.write(a[0].getAttribute('category'));

    document.write("<br />");

 

    a[0].removeAttribute('category');

 

    document.write(a[0].getAttribute('category'));

 

</script>

</body>

</html>

Define the code

  • "loadxmldoc.html" get the data.
  • Set 'a' variable to be the first title element node
  • Use getElementsByTagName() to get book nodes
  • Remove the "category" getattribute form the first book element node

How to Remove an Attribute Node by object

  • The removeAttribute() method removes a specified attribute.
  • The node object is use to remove an attribute node  from removeAttributeNode() method.

Example

In this example, we remove all attributes in the element node by using object.

<!DOCTYPE html>

<html>

<head>

<script type="text/javascript" src="loadxmldoc.html">

</script>

</head>

<body>

 

<script type="text/javascript">

    xmlDoc = loadXMLDoc("library.xml");

 

    a = xmlDoc.getElementsByTagName('book');

 

    for (i = 0; i < a.length; i++) {

        while (a[i].attributes.length > 0) {

            attnode = a[i].attributes[0];

            old_att = a[i].removeAttributeNode(attnode);

 

            document.write("Removed: " + old_att.nodeName)

            document.write(": " + old_att.nodeValue)

            document.write("<br />")

        }

    }

</script>

</body>

</html>

Define the code

    • "loadxmldoc.html" get the data.
    • Use getElementsByTagName() to get book nodes
    • RemoveAttributeNode() method is removed all attributes in the element node.

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