Check out example codes for "ionic badge". It will help you in understanding the concepts better.

Code Example 1

<!-- Default -->
<ion-badge>99</ion-badge>

<!-- Colors -->
<ion-badge color="primary">11</ion-badge>
<ion-badge color="secondary">22</ion-badge>
<ion-badge color="tertiary">33</ion-badge>
<ion-badge color="success">44</ion-badge>
<ion-badge color="warning">55</ion-badge>
<ion-badge color="danger">66</ion-badge>
<ion-badge color="light">77</ion-badge>
<ion-badge color="medium">88</ion-badge>
<ion-badge color="dark">99</ion-badge>

<!-- Item with badge on left and right -->
<ion-item>
  <ion-badge slot="start">11</ion-badge>
  <ion-label>My Item</ion-label>
  <ion-badge slot="end">22</ion-badge>
</ion-item>

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