如何使用 DRY 概念更有效地编写此代码？

Question

This is a piece of a JavaScript code for an HTML form. I want to be more efficient and not write the same line more than once; is this possible in the code below?

function resetOptions(location)
{   
    if (location=='country') 
    {   
        removeOptions(selected_address_zone)
        removeOptions(selected_address_region)
        removeOptions(selected_address_city)
        removeOptions(selected_address_area)
    }
    else if (location=='zone')
    {
        removeOptions(selected_address_region)
        removeOptions(selected_address_city)
        removeOptions(selected_address_area)
    }
    else if (location=='region')
    {
        removeOptions(selected_address_city)
        removeOptions(selected_address_area)
    }
    else
    {
        removeOptions(selected_address_area)
    }
    
}

Answer 1

You could rewrite with a switch statement without breaks. By doing this, if the location is a country, for instance, it will execute the cases below it until it finds a break.

  switch(location): {
    case: 'country': 
        removeOptions(selected_address_zone);
    case 'zone': 
        removeOptions(selected_address_region);
    case 'region':
        removeOptions(selected_address_city);
    default:
          removeOptions(selected_address_area);

  }

Answer 2

You could set variables for the arguments passed in the removeOptions() function at the top of your function.

You could then adjust the arguments according to your function parameters.

Would be helpful to see the removeOptions() function and its parameters.