Create a Web Resource in Model Driven Apps

Implementation Steps:

1. Navigate to https://make.powerapps.com

2. Click Solutions

3. Create a new Solution 

4. Click Create to Create a Solution

5. Once Solution gets Created --> Open Your Visual studio to Create  a JavaScript file ( Web Resource is not restricted to JS alone), please find the Screenshot below for the list of items we can create in Web Resource

6. I have taken VS to Create a new JS file

7. I have Written Some Sample JS Code

function sampleJavaScript() {
 alert("hello");
}

8. Once JS is Ready open the Created Solution  --> Click New --> Click More --> Click Web Resource

9. Input the Display Name/Name/Type 

10. In My Case Type as JavaScript --> Then Click on Browse --> Select the JavaScript which we have created

11. Click on Save.

That's it 🙂

Then we can add this JavaScript in Any Place of Forms Etc.,.