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CustomXmlPrefixMappings.addNamespaceAsync method (JavaScript API for Office)

Office Add-ins

Asynchronously adds a prefix to namespace mapping to use when querying an item.

Last modified: June 22, 2015

Note Note

The name "apps for Office" is changing to "Office Add-ins". During the transition, the documentation and the UI of some Office host applications and Visual Studio tools might still use the term "apps for Office". For details, see New name for apps for Office and SharePoint.

Hosts:

Word

Available in Requirement set

Added in

1.1

See all support details

customXmlPrefixMappingsObj.addNamespaceAsync(prefix, ns [, options], callback);

Name

Type

Description

Support notes

prefix

string

Specifies the prefix to add to the prefix mapping list. Required.

ns

string

Specifies the namespace to assign to the newly added prefix. Required.

options

object

Specifies any of the following optional parameters

asyncContext

array, boolean, null, number, object, string, or undefined

A user-defined item of any type that is returned in the AsyncResult object without being altered.

callback

object

A function that is invoked when the callback returns, whose only parameter is of type AsyncResult.

When the function you passed to the callback parameter executes, it receives an AsyncResult object that you can access from the callback function's only parameter.

In the callback function passed to the addNamespaceAsync method, you can use the properties of the AsyncResult object to return the following information.

Property

Use to...

AsyncResult.value

Always returns undefined because there is no object or data to retrieve.

AsyncResult.status

Determine the success or failure of the operation.

AsyncResult.error

Access an Error object that provides error information if the operation failed.

AsyncResult.asyncContext

Access your user-defined object or value, if you passed one as the asyncContext parameter.

If the prefix already exists in the namespace manager, this method will overwrite the mapping of that prefix except when the prefix is one added or used by the data store internally, in which case it will return an error.

A checkmark (√) in the following matrix indicates that this method is supported in the corresponding Office host application. An empty cell indicates that the Office host application doesn't support this method.

For more information about Office host application and server requirements, see Requirements for running apps for Office.

Office for Windows desktop

Office Online
(in browser)

Office for iPad

Word

Available in requirement sets

CustomXmlParts

Minimum permission level

ReadWriteDocument

App types

Task pane

Library

Office.js

Namespace

Office

Version

Changes

1.1

Added support for Word in Office for iPad.

1.0

Introduced

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