<var>

Description

Declares a variable in the scope of its parent element. If the <var> occurs in executable content, the declaration is made only when the <var> element is executed. If the <var> occurs as a child of a <form>, the declaration is made during the form's initialization phase. If the <var> occurs as a child of <vxml>, the declaration is made when the document is initialized (in document order). If the variable is already defined in the current scope, further declarations are treated as value assignments.

Syntax



<var
    name="string"
    expr="ECMAScript_Expression"/>

Attributes

Attribute	Description
name	The name of the variable. Required.
expr	An ECMAScript expression to be evaluated and used as the initial value assigned to the variable. Optional. (Defaults to undefined.)

Parents

Block Catch Error Filled ForEach Form Help If Noinput Nomatch Vxml

Children

None

VoiceGenie Extensions

None

Limitations/Restrictions

<var> 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">
  <var name="var1" expr="'first'"/>
  <form>
    <block>
      The initial value is <value expr="var1"/>.
    </block>
  </form>
</vxml>