やる

[tanhql]

どうやって~ is the format to ask someone how did he/she do/did something, right?
like どうやって出来ましたか = how did you managed to do it

in anime, i often hear 何やっているの for 'what're you doing' type of questions. why isn't there any particles between 何 and やって? is it a colloquial form?

どうもありがとうございます

 

[breez]

You guessed it right, it is common to leave out particles like that in spoken language.

 

[Elizabeth]

I think you already know the answer to your last question from starting this thread...

particle elimination | Japan Forum


一般会話では、特に「を」が状況によって、 飛ばされたりしますね。

接続語省略されても、 前後の文、その場の状況や雰意気で意味を理解(解釈)しなければならない英語 よりも日本語の場合が多いですね。