I am familiar with
frm.add_fetch("[LINK_FIELD]", "[CORRESPONDING_SOURCE_FIELD]", "[TARGET_FIELD]");
And how it will pull data from another DocType, given a link field value.
The Question is…
How do I go about fetching the same value, but instead of setting the value for a target field, I set the value of a JavaScript variable my_js_variable
for some calculations I wish to undertake? As soon as I am done with the calculations, depending on the result, will I then use:
cur_frm.set_value(‘[TARGET_FIELD]’, my_js_variable
);
To set the value of the desired field.