Why do we need an if statement for the status code if we are already applying a try and catch block to the code?

Before the if-statement for the status code, we have:

const getProfile = username => {
  try {
    https
      .get(`https://teamtreehouse.com/${username}.json`, response => {
        let body = ''

        response.on('data', data => {
          body += data.toString()
        })

        response.on('end', () => {
          try {
            const profile = JSON.parse(body)
            console.log(
              printMessage(
                profile.profile_name,
                profile.badges.length,
                profile.points.JavaScript
              )
            )
          } catch (e) {
            console.error('Invalid username')
          }
        })
      })
      .on('error', e => {
        printError(e)
      })
  } catch (e) {
    printError(e)
  }
}

• The first try-catch block will catch errors in visiting the URL e.g. problems with the URL
• The second try-catch block within the response.on block will catch errors thrown by JSON.parse()

Why have an if-else condition to check for status codes? e.g. suppose we enter a valid URL, and pass a valid username. But, the treehouse website is down, and so will throw a 500 error! Our code will catch the error and say the problem is that the data couldn't be parsed. This is wrong - the actual error that should have been outputted is "500 error".

I had the same question as you, and this is what I thought of? Please correct me if I'm wrong.

TLDR; The if-else condition is needed to catch and display the appropriate error message.

Tobias Edwards, I agree for the most part, I had the same question. I agree you need different try/catch for each specific task. However, if you get any status code deficient than 200 the code that parse the response wont run. I think a better example would be: if the status code is a 200, good response, but the server sends no data at all, or some random things not in Jason format, then the try/catch for the JSON.parse would run and catch the error. This is just an opinion base on how I understood, I am just an student.