How can I assign the output of a function to a variable using bash?

Question

I have a bash function that produces some output:

function scan {
  echo \"output\"
}

How can I assign this output to a variable?

Answer 1

I think init_js should use declare instead of local!

function scan3() {
    declare -n outvar=$1    # -n makes it a nameref.
    local nl=$'\x0a'
    outvar="output${nl}${nl}"  # two total. quotes preserve newlines
}