Update 'src/components/timer.vue'

src/components/timer.vue

@@ -8,11 +8,12 @@
 	onMounted(()=>{
 		let started = false
 		window.addEventListener('keydown', (event)=>{
-			event.preventDefault()
 			if(event.key === 'ArrowDown' && !started){
+				event.preventDefault()
 				proxy.start()
 				started = true
 			} else if (event.key === 'ArrowUp' && started){
+				event.preventDefault()
 				proxy.stop()
 				started = false
 			}