how to add xsl attribute - xslt

Question

I have an xml with img tag
<img>
source
</img>
I want to generate:
<img src="source.jpg">
I tried something like that:
<img>
<xsl:attribute name="src">
<xsl:text>
<xsl:value-of select="node()" />.jpg
</xsl:text>
</xsl:attribute>
</img>
but it doesng work

Answer 1

Use:
<img src="{normalize-space()}.jpg"/>
This assumes the <img> element is the current node.

Answer 2

The reason why what you are doing does not work is that you cannot evaluate XSLT expressions inside of the <xsl:text> element.
<xsl:text> can only contain literal text, entity references, and #PCDATA.
If you move the <xsl:value-of> outside of the <xsl:text>, then the following will work:
<img>
<xsl:attribute name="src">
<xsl:value-of select="node()" />
<xsl:text>.jpg</xsl:text>
</xsl:attribute>
</img>
However, selecting <xsl:value-of select="node()> for the <img> in your example will include the carriage returns and whitespace characters inside of the <img> element, which is probably not what you want in your src attribute value.
That is why Dimitre Novatchev used normalize-space() in his answer. Applying that to the example above:
<img>
<xsl:attribute name="src">
<xsl:value-of select="normalize-space(node())" />
<xsl:text>.jpg</xsl:text>
</xsl:attribute>
</img>
If you get rid of the <xsl:text> as Fabiano's solution suggests, then you could also do this:
<img>
<xsl:attribute name="src"><xsl:value-of select="normalize-space(node())" />.jpg</xsl:attribute>
</img>

Answer 3

Just remove the tag xsl:text, in this case, you won't need it. Try this:
<img>
<xsl:attribute name="src">
<xsl:value-of select="concat(node(), '.jpg')"/>
</xsl:attribute>
</img>
I didn't test it, but it should work. =)

Answer 4

<img>
<xsl:attribute name="src">
<xsl:value-of select="my_photo/#href" />
</xsl:attribute>
</img>
<my_photo href="folder/poster.jpg" />