pressed

See if a pin was pressed on or not.

sensing.pressed(DigitalPin.D0)

Example

If pin D0 is pressed, show a phaser on all the other pin LEDs.

loops.forever(function () {
    if (sensing.pressed(DigitalPin.D0)) {
        for (let i = 0; i <= 4; i++) {
            lights.set(i + 1, 1)
            loops.pause(50)
        }
        for (let i = 0; i <= 4; i++) {
            lights.set(i + 1, 0)
        }
    }
    loops.pause(100)
})