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JavaScript The Solution

Posted by pikktorr
pikktorr
6,606 Points

BONUS CHALLENGE in forLoops.js. Is it possible to get the exact same solution?

I tried the Bonus challenge with for loop, but the ending 8 wasn't in the string. Is it possible to get the same solution like with while and do..while loops? I tried with this :

for (let i = Math.floor(Math.random() *10); i !==8 ; i = Math.floor(Math.random() *10)) { text += i + ' '; }

3 Answers

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

Since the value 8 is the limit condition, it will not be added inside the loop. This is the same thing that occurs in the video example that uses "while". So you need an extra statement to add it after the loop, just as is done in the video example. But with the code above, the variable "i" is not accessible from outside the loop, so you can substitute a literal instead:

text += "8";

Another way would be to build the string as part of the loop increment clause. Then the loop body could be left empty:

for (let i; i !== 8; i = Math.floor(Math.random() * 10), text += i + " ");
pikktorr
pikktorr
6,606 Points
pikktorr
pikktorr
6,606 Points

Thank you Steven, it was really helpful!

Lucas Guimarães
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Lucas Guimarães
Front End Web Development Techdegree Student 3,900 Points
Lucas Guimarães
.a{fill-rule:evenodd;}techdegree
Lucas Guimarães
Front End Web Development Techdegree Student 3,900 Points

That is one alternative solution as well. Numbers between 0 till 9 and stopping and showing in 8.

for (s = 0; s != 8 ;) { s = Math.floor(Math.random() * 9); text += s + ' '; }

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

This won't give you the correct number range — if you multiply random by 9 and round down, the largest value you can get is 8 Also, you should declare the loop variable with "let" or "var", but it's not necessary to initialize it.