Lua

Update an XML Attribute

See more XML Examples

Demonstrates how to update XML attributes.

The output XML is this:

<abc b="pear" c="orange" a="130">Test</abc>

Lua

local chilkat = require("chilkat")

local xml = chilkat.Xml.new()

local success = xml:load_xml("<abc a=\"123\" b=\"apple\">Test</abc>")

-- The UpdateAttribute and AddOrUpdateAttribute methods
-- are identical.  Both will replace the attribute's value if it
-- already exists, or insert a new attribute if it does not yet exist.

-- Change the value of attribute "b" to "pear".
success = xml:update_attribute("b", "pear")

-- Because no attribute named "c" exists, UpdateAttribute
-- will create it:
success = xml:update_attribute("c", "orange")

-- If an attribute's value is an integer, the AddToAttribute
-- method may be called to update it by adding an integer value.
-- For example, update the value of "a" to "130" by adding 7.
xml:add_to_attribute("a", 7)

-- Examine the result:
print(xml:get_xml())