Phaser API Documentation

<static> JustUp(key)


The justUp value allows you to test if this Key has just been released or not.

When you check this value it will return true if the Key is up, otherwise false.

You can only call JustUp once per key release. It will only return true once, until the Key is pressed down and released again. This allows you to use it in situations where you want to check if this key is up without using an event, such as in a core game loop.


name type description
key Phaser.Input.Keyboard.Key

The Key to check to see if it's just up or not.


true if the Key was just released, otherwise false.

  • boolean
Since: 3.0.0