First, we'll add ./app/index.html to our project workspace. The contents of the index.html file will be as explained here onwards.
I have added comments in between the code to make the code more readable and easier to understand.
The index.html file is divided into many parts. We'll discuss a few of the key parts here. First, we will see how to address old versions of Internet Explorer. If you want to target the Internet Explorer browser versions greater than eight or IE version nine onwards, then we need to add the following block of code that will prevent JavaScript from rendering and give the no-js output to the end user:
<!--[if lt IE 7]> <html lang="en" ng-app="otrsApp" class="no-js lt-ie9 lt-ie8 lt-ie7"> <![endif]--> <!--[if ...
