using ngclass in angular code example

Example 1: ng class

[ngClass]="{'text-success':person.country === 'UK'}"

Example 2: ngclass angular

<div [ngClass]="{ 
'green': number > 5,
  'red': number <= 5,
}" ></div>
//if the number is over 5, the class 'green' will be added to the div.
//if the number is below or equal 5, the class 'red' will be added to the div.