[class] vs [ngClass]

[abhijeetkpawar]

https://github.com/codecraft-tv/angular-course/blob/current/5.built-in-directives/4.ngstyle-and-ngclass/index.adoc#alternative-syntax-1

Important	The above syntax removes all the existing classes for that element and replaces them with just 'text-success'.

The above statement isn't true anymore.