Using “Is Input Key Down,” I checked the space bar input to switch to jump animation.
However, I must hold down space bar for the jump animation to proceed. Are there any nodes that can only detect one input?
Create a custom bool variable in your character class and set it to true when you press jump, and back to false when, for instance, Jump Apex is reached, or simply after a short delay. Check that bool instead of Is Input Key Down.
I think you’ll find this logic works better in state machine, that’s where you choose which animation to run: