Stack3web
diff --git a/‎20-Drawing-Animations/01-timer/index.js‎
Lines changed: 15 additions & 3 deletions b/‎20-Drawing-Animations/01-timer/index.js‎
Lines changed: 15 additions & 3 deletions
diff --git a/‎20-Drawing-Animations/README.md‎
Lines changed: 29 additions & 2 deletions b/‎20-Drawing-Animations/README.md‎
Lines changed: 29 additions & 2 deletions
@@ -10,6 +10,8 @@ class Timer {
     // Callbacks are optional (logic for that)
     if (callbacks) {
       this.onStart = callbacks.onStart
+      this.onTick = callbacks.onTick
+      this.onComplete = callbacks.onComplete
     }
 
     // start(){}, Calling the constructor anytime the user clicks on the start button
@@ -39,11 +41,17 @@ class Timer {
   }
 
   tick = () => {
-    console.log('tick')
+    // console.log('tick')
     if (this.timeRemaining <= 0) {
       this.pause()
+      if(this.onComplete) {
+        this.onComplete()
+      }
     } else {
       this.timeRemaining = this.timeRemaining - 1
+      if(this.onTick) {
+        this.onTick()
+      }
     }
   }
 
@@ -66,8 +74,12 @@ const timer = new Timer(durationInput, startButton, pauseButton, {
   onStart() {
     console.log('Timer started')
   },
-  onTick() {},
-  onComplete() {},
+  onTick() {
+    console.log('Timer just ticked down');
+  },
+  onComplete() {
+    console.log('Timer just completed');
+  },
 })
 // timer.start()
 
 
@@ -156,13 +156,13 @@ const timer = new Timer(durationInput, startButton, pauseButton, {
   onStart() {
     console.log('Timer started')
   },
-  onTick() {},
+  onTick() {
+  },
   onComplete() {},
 })
 ```
 
 ```javascript
-class Timer {
   constructor(durationInput, startButton, pauseButton, callbacks) {
     this.durationInput = durationInput
     this.startButton = startButton
@@ -177,3 +177,30 @@ class Timer {
     this.pauseButton.addEventListener('click', this.pause)
   }
 ```
+
+
+## 8. 16 OnTick and OnComplete
+
+```javascript
+    if (callbacks) {
+      this.onStart = callbacks.onStart
+      this.onTick = callbacks.onTick
+      this.onComplete = callbacks.onComplete
+    }
+```
+
+```javascript
+  tick = () => {
+    if (this.timeRemaining <= 0) {
+      this.pause()
+      if(this.onComplete) {
+        this.onComplete()
+      }
+    } else {
+      this.timeRemaining = this.timeRemaining - 1
+      if(this.onTick) {
+        this.onTick()
+      }
+    }
+  }
+```