Xidel: How to process multiple result from one node?

Say, we have a code:

xidel -s https://www.example.com -e '(//span[@class="number"])'

and the output are:

111111
222222
333333

can I do this one below?

for ((n=1;n<=3;n++))
do
   a=$(xidel -s https://www.example.com -e '(//span[@class="number"]) [$n]')
   b=$a+1
   echo $b
done

I expect it to print out 3 edited numbers like this:

111112
222223
333334

it might be a little absurb to download the webpage 3 times, but the reason here is to process each value of the output one by one, using ForLoop.

xidel fully supports XPath/XQuery 3.0 (support for XPath/XQuery 3.1 is in development), so you can use all the features and filters it has to offer.
I can recommend the following websites:

• http://www.benibela.de/documentation/internettools/xpath-functions.html
• https://github.com/benibela/xidel/wiki/Frequently-asked-questions
• https://www.w3.org/TR/xpath-30/, https://www.w3.org/TR/xquery-30/
• https://www.w3.org/TR/xpath-functions-30/
• http://docs.basex.org/wiki/XQuery_3.0
• http://www.xqueryfunctions.com/xq/

---

Without a "Minimal, Reproducible Example" I'll just put your above mentioned output in a sequence and show you some examples.

xidel -se 'let $a:=(111111,222222,333333) return $a ! (. + 1)'
#or
xidel -se 'for $x in (111111,222222,333333) return $x + 1'
111112
222223
333334

xidel -se 'let $a:=("a abc","a sdf","a wef","a vda","a gdr") return $a ! substring-after(.,"a ")'
#or
xidel -se 'let $a:=("a abc","a sdf","a wef","a vda","a gdr") return $a ! replace(.,"a ","")'
#or
xidel -se 'for $x in ("a abc","a sdf","a wef","a vda","a gdr") return substring-after($x,"a ")'
#or
xidel -se 'for $x in ("a abc","a sdf","a wef","a vda","a gdr") return replace($x,"a ","")'
abc
sdf
wef
vda
gdr