Considering Hamas has a significant (far lesser than Gaza) presence in the West Bank, this is to be expected. Israel has stated one of their goals for this war is to destroy the organization completely. I'm on mobile so I'll dig up a source later, but there was a rally in Ramallah flying Hamas flags today, which is extremely surprising given the animosity between them and the PA.
Hamas is a movement. What do they think will be the outcome of this. They have set the stage for full blown war across the region. Unfortunately the US will keep the arms flooding in as well so the only logical conclusion is hell on earth for civilians, and continuation of this vicious cycle of violence.