<goto>

Description

Transitions to one of the following:

an item in the current form (ex. <goto nextitem="field_name"/>)
a dialog (i.e. form or menu) in the current document (ex. <goto next="#form_id"/>)
a document (ex. <goto next="URI"/>)
a dialog (i.e. form or menu) in a document (ex. <goto next="URI#form_id"/>)

Document variables will be lost when transitioning to the current document with a URI reference. For example, if the current document is http://www.voicexml.org/index.vxml, the document variables will be lost if the following syntax is used to transition to the "foo" dialog in the current document:

<goto next="http://www.voicegenie.com/index.vxml#foo"/>

Document variables will be retained when transitioning to the current document with an empty URI reference. For example, the document variables will be retained if the following syntax is used to transition to the "foo" dialog in the current document:

<goto next="#foo"/>

Note: Using a URI to transition to a document will cause the old document's variables to be lost. Keep this in mind when deciding which syntax to use to transition to a dialog in the current document.

Syntax



<goto
    next="URI"
    expr="ECMAScript_Expression"
    nextitem="item"
    expritem="ECMAScript_Expression"
    fetchaudio="URI"
    fetchaudiodelay="time_interval"
    fetchaudiominimum="time_interval"
    fetchhint="safe"
    fetchtimeout="time_interval"
    maxage="integer"
    maxstale="integer"/>

Attributes

Attribute	Description
next	The URI of the dialog (i.e. form or menu) or document to transition to when this `<goto>` is executed. Exactly one of next, expr, nextitem, or expritem must be specified.
expr	An ECMAScript expression to be evaluated and used as the URI of the dialog (i.e. form or menu) or document to transition to when this `<goto>` is executed. Exactly one of next, expr, nextitem, or expritem must be specified.
nextitem	The URI of the form item to transition to when this `<goto>` is executed. Exactly one of next, expr, nextitem, or expritem must be specified.
expritem	An ECMAScript expression to be evaluated and used as the URI of the form item to transition to when this `<goto>` is executed. Exactly one of next, expr, nextitem, or expritem must be specified.
fetchaudio	The URI of audio to play while waiting for the document to be fetched. Optional. Overrides the value of the fetchaudio property.
fetchaudiodelay	The length of time to wait at the start of the fetch delay before playing `fetchaudio`. Optional. Overrides the value of the fetchaudiodelay property. A platform extension.
fetchaudiominimum	The minimum length of time to play `fetchaudio`, once started, even if the document arrives in the meantime. Optional. Overrides the value of the fetchaudiominimum property. A platform extension.
fetchhint	Defines when the next document should be fetched. Optional. safe - only load the next document when needed Overrides the value of the documentfetchhint property.
fetchtimeout	The length of time to wait for the next document to be fetched before throwing an `error.badfetch` event. Optional. Overrides the value of the fetchtimeout property.
maxage	Indicates that this document is willing to use a cached copy of the next document only while the age of the cached copy is less than or equal to the number of seconds specified by this attribute. Optional. Overrides the value of the documentmaxage property.
maxstale	Indicates that this document is willing to use a cached copy of the next document that has exceeded its expiration time by as much as the number of seconds specified by this attribute. Optional. Overrides the value of the documentmaxstale property.

Attribute Notes

An error.badfetch event is thrown, if more or less than one of next, expr, nextitem, and expritem are specified.
An error.badfetch event is thrown if next or expr refer to a non-existent dialog (i.e. form or menu), either within the same page, or within a different, existent, page.

Parents

Block Catch Error Filled ForEach Help If Noinput Nomatch

Children

None

VoiceGenie Extensions

Added fetchaudiodelay attribute.
Added fetchaudiominimum attribute.

Limitations/Restrictions

<goto> cannot be used as a child of <foreach> when <foreach> is a child of <prompt> and vxmli.conformance.disallow_exec_content_within_prompts is set to true.

Example



<?xml version="1.0"?>
<vxml version="2.0" xmlns="http://www.w3.org/2001/vxml">
  <form>
    <block>
      This is the first block.
      <goto nextitem="block2"/>
    </block>
    <block name="block2">
      This is the second block.
      <goto next="#form2"/>
    </block>
  </form>
  <form id="form2">
    <block>
      This is the second form. 
    </block>
  </form>
</vxml>