uppercase filter is used to convert the input to all uppercase.
In below example, we've added uppercase filter to an expression using pipe character. Here we've added uppercase filter to print student name in all uppercase letters.
<div>
The name of this Tutorial is {{TutorialName}}
The first Topic is {{appList[0] | uppercase}}
The second Topic is {{appList[1] | uppercase}}
The third Topic is {{appList[2]| uppercase}}
</div>