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This documentation is for CCXML 1.0-Voxeo, which has been superceded by CCXML 1.0-W3C. The CCXML-Voxeo platform is not being updated any longer. The CCXML 1.0-W3C version, however, has many new features and is actively being enhanced. If you're writing a new CCXML application, you should use CCXML 1.0-W3C. Click here for the CCXML 1.0-W3C documentation.
<if>  element

The <if> element, (in conjunction with the <else/elseif> elements), provides a method to utilize conditional logic expressions which allow the developer to change the control flow within the application based on variable values, or events.


usage
<if cond="(ECMAScript Expression)">


attributes
condData Type: (ECMAScript Expression)Default: none - attribute is required
The cond attribute specifies an ECMAScript expression which can be evaluated to 'true' or 'false'. A condition must evaluate to 'true' in order for any enclosed operations to be performed.



parents
none


children
none


code samples
<If cond> sample
<?xml version="1.0" encoding="UTF-8" ?>
<ccxml version="1.0">

<var name="state0" expr="'init'"/>

  <eventhandler statevariable="state0">

    <transition event="connection.CONNECTION_ALERTING" name="evt">
      <log expr="'*** INCOMING CALLID IS: ' + evt.calledid + ' ***'"/>
      <accept/>
    </transition>

    <transition event="connection.CONNECTION_CONNECTED">
      <log expr="'*** INCOMING CALL WAS ANSWERED ***.'"/>

      <if cond="evt.callerid == '4075551234'">
        <log expr="'*** \'IF\' CONDITION IS TRUE ***'"/>

      <elseif cond="evt.callerid == '4075554321'"/>
        <log expr="'*** \'ELSEIF\' CONDITION IS TRUE ***'"/>
      <else/>
        <log expr="'*** \'ELSE\' STATEMENT REACHED ***'"/>
        <disconnect/>
      </if>

    </transition>


<!-- ****************** GENERAL EXCEPTIONS ******************** -->
    <transition event="call.CALL_INVALID">
      <exit/>
    </transition>

    <transition event="error.*" name="evt">
      <log expr="'*** ERROR HAS OCCURED [' + evt.error + '] ***'"/>
      <exit/>
    </transition>
  </eventhandler>

</ccxml>



additional links
W3C Specification


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