Romaji: Kūchū banejanpu), commonly shortened to just Spring Jump, is one of the basic tricks used in Super Mario Maker. There are many variations of the basic midair spring jump.
How It Works
When Mario drops a spring at the peak of his jump it will land underneath his feet allowing him to jump off it in midair. The reason for this is because when Mario has horizontal momentum the spring is dropped straight down, instead of being dropped forward when he has none.
Basic Midair Spring Jump
Delayed Midair Spring Jump
This is done by dropping a spring near the peak of Mario's jump and then immediately holding forward to catch up to the spring.
Double Midair Spring Jump
This is done in the Super Mario World game style by throwing one spring upwards, immediately doing a spring jump with the second spring and then doing a second spring jump after catching the first spring in the air. This must either be done with very little horizontal momentum or against a wall.
This can also be done in other game styles by having the first spring bounce off the second spring instead of throwing it upwards.
By doing a sissy throw Mario is able to throw a spring slow enough to catch up to it in midair.
TAS Spring Jump
By bouncing off the spring in a specific way it is possible for Mario to jump one block higher than he normally is able to. This trick is generally considered easier to perform in the New Super Mario Bros. U game style.
Up Throw Midair Spring Jump
This is done by throwing a spring upwards and jumping on it while it is falling. It is also possible to delay this. As it requires the use of the up throw mechanic it is only possible in the Super Mario World game style.
Yoshi Dismount Spring Jump
This is done by spitting out a spring with Yoshi and then dismounting him in order to catch the spring after it rebounds off the wall and do a midair spring jump.