How do you get jump boost with command blocks?

To give a player jump boost using command blocks in minecraft, you can use the /effect command. Place a command block and enter the command /effect give @p jump_boost 10 1, where 10 is the duration in seconds and 1 is the level of the effect. Activate the command block with a redstone signal, and the player will receive jump boost for the specified duration. You can also use a repeating command block for continuous effects.