My professor asks us to make this using for, while and do while loops in Javascript. I need help

Question

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Answer 1

Here you are! There are some explanations in the code :)
https://code.sololearn.com/WbiK766iqQLa/?ref=app

Answer 2

var res= " "
for(var i=0; i< 10; i++){
res += "#"
console.log(res)

}

Answer 3

Thanks!