lesson 22: add a function parameter

basics-03-events-starting-code/app.js

@@ -5,11 +5,11 @@ const app = Vue.createApp({
         };
     },
     methods: {
-        increaseCounter() {
+        increaseCounter(inputNumber) {
-            this.counter++;
+            this.counter = this.counter + inputNumber;
         },
-        decreaseCounter() {
+        decreaseCounter(inputNumber) {
-            this.counter--;
+            this.counter = this.counter - inputNumber;
         },
     },
 });

basics-03-events-starting-code/index.html

@@ -17,8 +17,8 @@
     </header>
     <section id="events">
         <h2>Events in Action</h2>
-        <button v-on:click="increaseCounter">Add</button>
+        <button v-on:click="increaseCounter(5)">Add</button>
-        <button v-on:click="decreaseCounter">Reduce</button>
+        <button v-on:click="decreaseCounter(5)">Reduce</button>
         <p>Result: {{ counter }}</p>
     </section>
 </body>