Check out example codes for "xsl variable". It will help you in understanding the concepts better.

Code Example 1

<xsl:variable name="">    <book title="my static name" />    <book>        <xsl:attribute name="title"><xsl:value-of select="/*/category/@name" /></xsl:attribute>    </book></xsl:variable>

Learn ReactJs, React Native from akashmittal.com