# \<var>

## \<var>

This element declares a variable. It can occur in executable content or as a child of `<form>` or `<vxml>`.

### Attributes

<table><thead><tr><th width="136">Name</th><th width="140.33333333333331">Data type<select><option value="93e44e86d1574d26815d966e85e47b64" label="String" color="blue"></option><option value="b294e576b50a44eabf055201e5f2a482" label="Integer" color="blue"></option><option value="c13ab04720374d14bbeca8e1f9ecd99a" label="Boolean" color="blue"></option></select></th><th>Description</th></tr></thead><tbody><tr><td>name</td><td><span data-option="93e44e86d1574d26815d966e85e47b64">String</span></td><td>The name of the variable that will hold the result.</td></tr><tr><td>expr</td><td><span data-option="93e44e86d1574d26815d966e85e47b64">String</span></td><td><p>The initial value of the variable (optional). If there is no expr attribute, the variable retains its current<br>value, if any.</p><p></p><p>If not given an initial value, variables start out with the ECMAScript value undefined.</p></td></tr></tbody></table>

### Notes

None

### Example

```markup
<?xml version="1.0"?>
<vxml version="2.0">
  <form>
    <var name="test_var"/>
    <block>
      <assign name="test_var" expr="1234"/>
    </block>
    <block>
      <prompt>
        The test variable is set to <value expr="test_var"/>.
      </prompt>
    </block>
  </form>
</vxml>
```

The output of the above script would be:

> Computer: The test variable is set to twelve hundred thirty-four.

### Child Tags

None

### Parent Tags

[\<block>](/dev/voicexml/tags/block-tag.md), [\<catch>](/dev/voicexml/tags/catch-tag.md), [\<error>](/dev/voicexml/tags/error-tag.md), [\<filled>](/dev/voicexml/tags/filled-tag.md), [\<foreach>](/dev/voicexml/tags/foreach-tag.md), [\<form>](/dev/voicexml/tags/form-tag.md), [\<help>](/dev/voicexml/tags/help-tag.md), [\<if>](/dev/voicexml/tags/if-tag.md), [\<noinput>](/dev/voicexml/tags/noinput-tag.md), [\<nomatch>](/dev/voicexml/tags/nomatch-tag.md), [\<vxml>](/dev/voicexml/tags/vxml-tag.md)


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