<nomatch>

Description

Catches a nomatch event, which is thrown by the VoiceXML application or by the platform when, during an input context, the user inputs data that is not matched with any entry in the grammar(s). The <nomatch> element associates a nomatch handler with a document, dialog (i.e. form or menu), or form item. It contains executable content. It is a shorthand notation for <catch event="nomatch">.

Syntax

<nomatch
    count="integer"
    cond="ECMAScript_Expression">
  child elements
</nomatch>

Attributes

Attribute	Description
count	The count attribute allows you to handle different occurrences of the nomatch event differently. Each form, menu, and form item maintains a counter for the nomatch event while it is being visited; these counters are reset each time the menu or form item's form is re-entered. When there are more than one `<nomatch>` element catching a nomatch event, the element in the closest scope with the highest count that is less than or equal to the current counter will be selected. Optional. (Defaults to 1.)
cond	An ECMAScript expression to be evaluated and used as a boolean condition. This `<nomatch>` element will only catch the nomatch event if the expression evaluates to `true`. Optional. (Defaults to true.)

Anonymous Variables

Two anonymous variables are available within the scope of the <nomatch> element:

_event - This contains the name of the event that was thrown (i.e. "nomatch").
_message - This contains the message string from the corresponding <throw>, <choice>, <link>, or <return> element, or a platform defined value for nomatch events thrown by the platform. If no message is specified, the value of this variable is ECMAScript undefined.

Parents

Field Form Initial Menu Object Record Subdialog Transfer Vxml

Children

Assign Audio Clear Data Disconnect Enumerate Exit ForEach Goto If Log Prompt Reprompt Return Script Submit Throw Value Var #PCDATA

VoiceGenie Extensions

None

Limitations/Restrictions

None

Example

<?xml version="1.0"?>
<vxml version="2.0" xmlns="http://www.w3.org/2001/vxml">
  <form>
    <field name="field1">
      <dtmf> 1 </dtmf>
      <prompt> Please press 4. </prompt>
      <nomatch>
        I don't recognize that key. 
        <exit/>
      </nomatch>
    </field>
  </form>
</vxml>