31. Did you change that?

You respond to an event in XSLT by writing templates in a mode that corresponds to the category of event.

• Suppose, for example, you wanted to respond when someone changed a select pulldown.

• The event that fires when you change an HTML element is the “change” event.

• If you write a template in the ixsl:onchange mode, it will fire when the element changes. For example:

  <xsl:template match="select" mode="ixsl:onchange">
    …
  </xsl:template>
  

Generally, you can respond to any “eventname” event by writing a template in the “ixsl:oneventname” mode.