What does the word 「やったる」 mean?


Here is the sentence including the word. It is said by an old man who is
cooking some food and planning to give it to a younger person who is in jail.

> ようし わしゃあ **やったる** ぜ

I am not sure if it is a shorten form of 「やってやる」which means "Doing something
for someone who is below than the speaker"

Is it still used nowadays in Kantou area?




Yes, it's short for やってやる. Please see [this
answer](https://japanese.stackexchange.com/a/18159/5010) for the list of
similar contractions. I think this contraction is common throughout Japan
regardless of generation (but it sounds relatively masculine)

And `te-form + やる` means not only "to do something for someone" but also "dare
to do something", "to do something proactively with an active effort", "to do
something and show off (the result / one's power)" etc. See: [what does てやる
mean when it is not used for
giving?](https://japanese.stackexchange.com/q/14413/5010)

The sentence probably just means "I'll do that" (without "for someone").




Yes, it's short for やってやる. Please see [this
answer](https://japanese.stackexchange.com/a/18159/5010) for the list of
similar contractions. I think this contraction is common throughout Japan
regardless of generation (but it sounds relatively masculine)

And `te-form + やる` means not only "to do something for someone" but also "dare
to do something", "to do something proactively with an active effort", "to do
something and show off (the result / one's power)" etc. See: [what does てやる
mean when it is not used for
giving?](https://japanese.stackexchange.com/q/14413/5010)

The sentence probably just means "I'll do that" (without "for someone").

