XSLT summarize value

Question

I need to generate an item that accumulates a total for a given XML input.

The XML input is:

Answer 1

Use the sum() function to total the @amount values:

<xsl:value-of select="sum(/catalog/item/@amount)"/>

Note that you'll want to move your Total: label along with the above xsl:value-of outside of your xsl:for-each loop.