Are there any excerises that help you jump higher that you can see results in a matter of weeks

I need exercises that will help me be able to jump higher. I am an outside hitter (5’3") and I sometimes block but I can only get a few of my fingers over the net. I want to be a really good blocker! plz help me!

i am playing basketball… i am 13 and 5’8 and 145lb…. but i wanna jump higher… i know i wont b able to dunk.. but i may be able to in the future(growth XD) anyways… what are some god ways to help me jump higher?

make your legs stronger?
for sports
like volleyball
basketball
and track

thankss;]

Who is a faster sprinter & can jump higher vertically?