UpdateAttribute

Updates an attribute of the XML node at the specified XPath.

Syntax

expression.UpdateAttribute(xPath, name, value);

expression - A variable that represents an ApiCustomXmlPart class.

Parameters

Name	Required/Optional	Data type	Default	Description
xPath	Required	string		The XPath of the node whose attribute should be updated.
name	Required	string		The name of the attribute to update.
value	Required	string		The new value for the attribute.

Returns

boolean

Example

Update the value of an attribute in a custom XML node in a presentation.

// How do I modify an existing attribute in an XML element in a presentation?

// Display the updated XML with the new attribute value in a presentation.

const presentation = Api.GetPresentation();
const slide = presentation.GetSlideByIndex(0);
slide.RemoveAllObjects();

const xmlManager = presentation.GetCustomXmlParts();
const xml = xmlManager.Add('<content xmlns="http://example" version="1.0"></content>');
xml.UpdateAttribute('/content', 'version', '2.0');

const fill = Api.CreateSolidFill(Api.HexColor('#00897B'));
const stroke = Api.CreateStroke(0, Api.CreateNoFill());
const shape = Api.CreateShape('rect', Api.MillimetersToEmus(300), Api.MillimetersToEmus(130), fill, stroke);
shape.SetPosition(Api.MillimetersToEmus(20), Api.MillimetersToEmus(35));
slide.AddObject(shape);

const docContent = shape.GetContent();
const paragraph = docContent.GetElement(0);
paragraph.AddText('XML after update: ' + xml.GetXml());