Apply custom class for a specific element based on operating system

[Merbin_Joe]

After searching I found the following link

Theme Based Rendering | Framework7 Documentation

This link hides the element based on the operating system, but I don’t want to create two separate elements for each OS, I want to just apply some class on the specific element based on the OS.

For example

<div data-condition={if-ios=>cus-ios-cls, if-md=>cus-md-cls}>

---

---

</div>

I can achieve this through JavaScript, but I want to know is any alternative way.