You have solved the exercises and mandatory problems in a very neat, simple and understandable code and it's great. Well done.

Many thanks :)

Hello Leila, you have done an amazing job and your codes are simple and easy to understand and review. However, I think for the return you could have used .concat to concatenate all the words together like on the above combine2Words function. If there is a reason for not using that do you mind explaining? Thank you

Thank you for your feedback. Yes you are completely right. I just wanted to try every piece of code that we have learnt during course :)

Hi Leila

You're very close with the answer, the last answer isn't quite correct but I definitely see your logic for this one, you can try to run console.log(10); and see the result 👍

Good work not using var here! The greeting can actually be a const which is short for "constant" meaning the value never changes.

There will be other areas in this PR where const should be used instead of let or var but since the exercises didn't help with this - I won't mention it further on and you don't need to action it 👍

This works great.

JavaScript does allow you to forget semicolons but we should always add them (line 2), no doubt this was an innocent mistake whilst learning :) I'd always suggest adding spaces between the variable and its assignment just for cleanliness / readability as well, like such (This feedback applies for the full PR):

const message = "this is a string";
const messageType = typeof message;

Finally one other suggestion would be to delete commented out code, it's a very easy thing to leave commented out code in your commits, I do it sometimes in my full time job as well. Here's a link to our style guide on commented out code to explain a little more: https://syllabus.codeyourfuture.io/guides/code-style-guide#dont-leave-lots-of-commented-out-code

This passes and does exactly what we need it to do, great work Leila.

We could tidy it up a little, if you notice you are using concatenation to add a space +" "+ after a string. We could just add the space to the string before it instead, for example:

console.log("My name is " + name + " and my name is " + message + " characters long.");

By adding the spaces in the original strings, we have less + symbols and the line becomes a little easier to read.

Great effort, I would apply my previous feedback here regarding the spaces, just so it's a little easier to read. I won't comment any other instances of this suggestion in the PR :)

console.log("My name is " + name.trim() + " and my name is " + message + " character long.");

This is correct and you've done well Leila, good use of the math library as well 👍

I would just be careful of your indentation as well as use const or let on your new variables, the return line is indented more than the other lines.

Another way you could return your value is just passing fixAnswer[randomNumber] instead of using the variable since it's quite a small line.

function shakeBall() {
  console.log("The ball has shaken!");
  const randomNumber = Math.floor(Math.random() * fixAnswer.length);
  
  return fixAnswer[randomNumber];
}

Hi Leila, you've pretty much hit the nail on the head here 👍

I would just be careful at the end with your } else answer = "Something broken"; as this syntax isn't quite correct. I also notice you define answer then return it at the end, another way of doing this is just to return in each conditional block. For example:

function checkAnswer(answer) {
  const ballPredict = fixAnswer.indexOf(answer);
  
  if (ballPredict <= 4) {
    return "very positive";
  } else if (ballPredict <= 9) {
    return "positive";
  } else if (ballPredict <= 14) {
    return "negative";
  } else if (ballPredict <= 19) {
    return "very negative";
  }
  
  return "Something broken";
}

You have successfully completed the exercise by fixing the errors 💯

We are however defining a word variable 4 times in this file, reassigning its value and never actually using the variable anywhere. We can probably delete these lines :)

You've completed this mandatory exercise spot on Leila :)

The only feedback would be that we don't need the firstWord, secondWord and thirdWord variables on line 19 to 21 since they're never used 👍

Great job, there's nothing I can suggest for improvements here :)