Button Is Pressed
Check whether a button is pressed right now. The micro:bit has two buttons: button A
and button B
.
input.buttonIsPressed(Button.A);
Parameters
button
is a String. You should storeA
in it to check the left button,B
to check the right button, orA+B
to check both at the same time.
Returns
- a boolean value that is
true
if the button you are checking is pressed,false
if it is not pressed.
Example
This program uses an ||logic:if||
to run
one part of the program if the A
button is pressed, and
another part if it is not pressed.
basic.forever(() => {
let pressed = input.buttonIsPressed(Button.A)
if (pressed) {
// this part runs if the A button is pressed
basic.showNumber(1)
} else {
// this part runs if the A button is *not* pressed
basic.showNumber(0)
}
})
Find out how buttons provide input to the micro:bit in this video: