[lux]

Sure!

So, in this instance, h is the character that triggers the while-loop. What it does is pop off the top three items from the stack:

• A string, which is the body of the while loop.
  
• A string, which is the condition the while loop executes on
  
• A value, which is passed to the condition and body.
  

In this case:

• _2%;_3*1+;2/?p is the body of the loop.
  
• 1> is the condition
  
• i is the value (coming from user input in this case).
  

So, what this code does is:

• Take user input.
  
• While this user input is greater than 1:
  • Check if it's divisible by 2.
    
  • If so, divide it by 2.
    
  • If not, multiply by 3 and add 1.
    
  • Print out the result.
    

That's basically it! It's essentially a direct conversion of the Python code.

Exact conversation of the JS code, too.