<var>

A <var> element declares a variable.

Syntax

<var expr="expression"
     name="var" />

Attributes

expr

The initial value of the variable (optional). If there is no expr attribute, the variable retains its current value, if any. Variables start out with the ECMAScript value undefined if they are not given initial values.

name

The name of the variable that will hold the result. Unlike the name attribute of <assign> element, this attribute must not specify a variable with a scope prefix. The scope in which the variable is defined is determined from the position in the document at which the element is declared.

Children

none

Parents

<block>, <catch>, <error>, <filled>, <form>, <help>, <if>, <menu>, <noinput>, <nomatch>, <prompt>, and <transfer>.

Variables

none

Example

The following example illustrates using example elements.

<var name="phone" expr="'6305551212'"/> 
<var name="y" expr="document.z+1"/>

Version Information

Supported in: VoiceXML 1.0, VoiceXML 2.0, and VoiceXML 2.1.