How do I rewrite this code for V8 from Rhino?

Question

I used to a script on GAS. Because I do manage attendance by Chat and Google spread sheet with GAS. Chat tool is Chat work. It works on Gas(Rhino). But It doesn\'t work V8.

Answer 1

See the official documention here: https://developers.google.com/apps-script/guides/v8-runtime/migration#avoid_for_eachvariable_in_object

In short:

for each (var obj in json) {
  do_something_with(obj);
}

becomes

for (var obj of json) {
  do_something_with(obj);
}

Note that in changed to of, which makes the for-loop iterate over values rather than keys. Accordingly, you can also use a traditional for-in loop, and manually use the key to get the value:

for (var obj_key in json) {
  var obj = json[obj_key];
  do_something_with(obj);
}

You can also use let instead of var to get block-scoped variables, which are generally more intuitive to use, but that's an unrelated change and is not required if you just want things to work.