The <error> element is short for <catch event="error"> and catches all events of type error.
|count||(defaults to 1) The occurrence of the event. The count allows you to handle different occurrences of the same event differently. Each <form>, <menu>, and form item maintains a counter for each event that occurs while it is being visited; these counters are reset each time the <menu> or form item's <form> is re-entered. The form-level counters are used in the selection of an event handler for events thrown in a form-level <filled>. Counters are incremented against the full event name and every prefix matching event name; for example, occurrence of the event "event.foo.1" increments the counters associated with handlers for "event.foo.1" plus "event.foo" and "event".|
|cond||(defaults to true) An expression that must evaluate to true after conversion to Boolean in order for the event to be caught.|
<?xml version="1.0"?> <vxml version="2.0"> <form> <block> <throw event="error" message="oh no, there was an error."/> </block> <!-- The "error" tag is shorthand for a "catch" tag that catches an --> <!-- event named "error". --> <error> <prompt> Caught my error event with the following message: <break time="1s"/> <value expr="_message"/> </prompt> </error> </form> </vxml>
The output of the above script would be:
Computer: Caught my error event with the following message:
Computer: oh no, there was an error.
<assign>, <audio>, <clear>, <data>, <disconnect>, <enumerate>, <exit>, <foreach>, <goto>, <if>, <log>, <prompt>, <reprompt>, <return>, <script>, <submit>, <throw>, <value>, <var>
<field>, <form>, <initial>, <menu>, <record>, <subdialog>, <transfer>, <vxml>