The SCA contains a module for the notification which is GlobalViewsMessageView.We can add notifications like errors and success messages using the module.
The Example is added below
First, we need to define GlobalViewsMessageView the module

The Example code to show the notification of Success message is added below

alert.show(placeholder, 6000);
The 6000 is an indication of how much time will need to appear.The example shows 6 seconds