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Update reactive.md

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Tom Ball 2018-11-13 15:12:56 -08:00 committed by GitHub
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docs/device/reactive.md
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@ -148,17 +148,18 @@ Through this example, we have seen that the micro:bit scheduler enables you to c
As a result, you can easily add a new capability to the micro:bit by just adding a new subprogram. For example, if you want to add a reset feature to the counter program, all you need to do is add a new event handler for a press of button **B** that sets the global variable "count" to zero, as shown below: As a result, you can easily add a new capability to the micro:bit by just adding a new subprogram. For example, if you want to add a reset feature to the counter program, all you need to do is add a new event handler for a press of button **B** that sets the global variable "count" to zero, as shown below:
```typescript ```typescript
function countButtonPressesWithReset() { let count = 0
let count = 0
input.onButtonPressed(Button.A, () => { input.onButtonPressed(Button.A, () => {
count = count + 1 count = count + 1
}) })
basic.forever(() => {
basic.showNumber(count) basic.forever(() => {
}) basic.showNumber(count)
input.onButtonPressed(Button.B, () => { })
count = 0
}) input.onButtonPressed(Button.B, () => {
} count = 0
})
``` ```