<if>

<if>

The <if> element is used for conditional logic. It has optional <else> and <elseif> elements.

Attributes

Name

Description

cond

An ECMAScript expression to evaluate.

Notes

Note that the <else> and <elseif> tags both must contain a trailing forward slash to terminate.

Correct example
Incorrect example
Correct example
<if cond="number==5">
<!-- do something -->
<elseif cond="number==2"/>
<!-- do something else -->
<else/>
<!-- do something for all other cases -->
</if>
Incorrect example
<if cond="number==5">
<!-- do something -->
<elseif cond="number==2">
<!-- this won't work since we left off the / -->
<else>
<!-- this also won't work since we left off the / -->
</if>

Example

<?xml version="1.0"?>
<vxml version="2.0">
<form>
<field name="myprompt" type="digits">
<prompt>
Say the magic number between 1 and 9.
</prompt>
<filled>
<!-- The "cond" attribute within an "if" tag -->
<!-- should contain a boolean ECMAscript expression. -->
<if cond="myprompt==5">
<prompt>
You guessed correctly!
</prompt>
<elseif cond="myprompt==4 || myprompt==6"/>
<prompt>
You're close. Try again.
</prompt>
<clear namelist="myprompt"/>
<else/>
<prompt>
Try again.
</prompt>
<clear namelist="myprompt"/>
</if>
</filled>
</field>
</form>
</vxml>

The output of the above script would be:

Computer: Say the magic number between one and nine. Human: Three. Computer: Try again. Say the magic number between one and nine. Human: Six. Computer: You're close. Try again. Say the magic number between one and nine. Human: Five. Computer: You guessed correctly!

Child Tags

<audio>, <assign>, <clear>, <data>, <disconnect>, <else>, <elseif>, <enumerate>, <exit>, <foreach>, <goto>, <if>, <log>, <prompt>, <reprompt>, <return>, <script>, <submit>, <throw>, <value>, <var>

Parent Tags

<block>, <catch>, <error>, <filled>, <foreach>, <help>, <if>, <noinput>, <nomatch>