hello,
i use function apex.ajax.clob like
https://atulley.wordpress.com/2014/02/07/setting-and-retrieving-clob-values-in-apex/
in apex 18.1 , it seems to be desupported or deprecated
console.log( jQuery.isFunction(apex.ajax.clob));
false
for the moment , i have to check

is there an alternative function to apex.ajax.clob ?
regards
jm