This chapter is from the book
This chapter is from the book
This chapter is from the book
This chapter is from the book
3.58 var
|
Element type |
var |
|
Attributes |
expr | name |
|
Parents |
block | catch | error | filled | form | help | if | noinput | nomatch | vxml |
|
Children |
None. |
|
Description |
Declares a variable in the scope of its parent element. |
DTD
<!ELEMENT var EMPTY > <!ATTLIST var name %field.name; #REQUIRED expr %expression; #IMPLIED >
Language model
Attributes
-
name : field.name
Name of the variable to declare.
-
expr : expression
An ECMAScript expression of the value.
Children
None.
Examples
Example 3-69 Defining a variable with var
<?xml version="1.0" encoding="iso-8859-1"?>
<vxml version="1.0">
<var name="greeting" expr="'good day'"/>
<form>
<field name="language">
<grammar>english | french | german</grammar>
<prompt>What language?</prompt>
<noinput>
Choose between English, French, and German.
</noinput>
<filled>
<if cond="language=='french'">
<assign name="greeting" expr="'bon jour'"/>
<elseif cond="language=='german'"/>
<assign name="greeting" expr="'guten tag'"/>
</if>
<if cond="language=='english'">
<prompt>
<value expr="greeting"/>!
</prompt>
<else/>
<prompt>
And in <value expr="language"/>,
<value expr="greeting"/>!
</prompt>
</if>
</filled>
</field>
</form>
</vxml>