Javascript width based if else condition | React Js | Vue Js

<!DOCTYPE html>
<html>
  <head>
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
  </head>
  <body>
    <div id="app">
      <h3>Vue js width based if else condition</h3>
      <div :style="{ width: dynamicWidth }" style="border:1px solid #333333">Font Awesome Icons</div>
      <p>width: {{dynamicWidth}}</p>
      <button @click="handleClick">Toggle Width</button>
    </div>

<script type="module">
      const app = new Vue({
        el: "#app",
        data() {
          return {
            dynamicWidth: "100%",
          };
        },
        methods: {
          handleClick() {
            if (this.dynamicWidth === '100%') {
              this.dynamicWidth = "50%";
            } else {
              this.dynamicWidth = "100%";
            }
          },
        },
      });
    </script>

<style>
      #app {
        margin: 0 auto;
        width: 600px;
        text-align: center;
        box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.12),
          0 2px 4px 0 rgba(0, 0, 0, 0.24);
        padding: 20px;
      }
    </style>
  </body>
</html>